Malicious PDF — malware analysis report

Static analysis result for SHA-256 aae0f1608f6b7176…

MALICIOUS

PDF

110.7 KB Created: 2021-07-14 00:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 0c5d7725ce3efac5a66af137c7689c71 SHA-1: cd62e2be02aa595ce8fe0b9e17e7082b6640803d SHA-256: aae0f1608f6b7176a6344d48cd1e1064909596a0584063389c881ae3af488d51
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning model. It contains numerous links pointing to compromised WordPress sites, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farms indicates an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9931

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pistant.ru/uplcv?utm_term=call+me+by+your+name+pdf+file PDF link annotation
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/4fe20b9cfb0a5abfed41c0768053621f/widutidivubawopeloga.pdfIn PDF document text
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3f27107c03---79049500008.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/worinoligozaboside.pdfIn PDF document text
    • https://mides.vn/images/ckeditor/files/72372387851.pdfIn PDF document text
    • https://artlabjo.com/userfiles/file/wifavupimafulerugatireb.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16074a7fba85ab---doduv.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b616fdb8a3b---sewuj.pdfIn PDF document text
    • http://nutronicltd.com/userfiles/file/20174073239.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a86dadae8b3---80050985815.pdfIn PDF document text
    • https://duext.com/wp-content/plugins/super-forms/uploads/php/files/575b44894b145ec0aa9737de6121879f/didigilizamibelefix.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759534c7a50---44169664933.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160877b09ab04f---minod.pdfIn PDF document text
    • http://thongthien.vn/upload/files/maguwuberemadefod.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/aeql24bce219hnb7p016kumvi3/rorefumozazujukovumokaxuf.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/da4cb5993fd8cd8cf8a006203504c625/vevuxitegipi.pdfIn PDF document text
    • http://artechq8.com/beta/uploads/files/jaregekubanivadole.pdfIn PDF document text
    • http://qtjdb.com/UploadFile/2021/07/03/file/20210703_102404_168.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9e6656d8f---91305396647.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/lvvb68sqi09vb78f7us3r2qa75/rajatavofasekowukirekoja.pdfIn PDF document text
    • http://opalsolar.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160792ac11b368---kenafamoso.pdfIn PDF document text
    • http://hk-dcc.com/wp-content/plugins/super-forms/uploads/php/files/ojqilkacb8f4mcjj9dvqbt2ni6/36267054003.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16098d1bf7ca72---lurudowopir.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0029f39ef---96437599686.pdfPDF link annotation
    • http://www.anjhimayath.com/upload/file/xotab.pdfIn PDF document text
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/db0067673611f7c326d141841d0d8cfd/44766371359.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E94 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000166a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166A6 17668 bytes
SHA-256: d6519b72ee1612fb3a73e1db2bb83510b4789f583124d2b2a5c89cd7e23b1753
font_02_sfnt_off000194fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x194FA 10776 bytes
SHA-256: 098b062e5ae760c6b0d62a1221fd04f3b77ec99589e311f811dd2263fd647f05

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