Malicious PDF — malware analysis report

Static analysis result for SHA-256 06d29e5234724a76…

MALICIOUS

PDF

117.1 KB Created: 2021-09-02 17:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 76ddbec47abc5ea20d9996feccfb77fb SHA-1: 75aa040b6ce9fc1a268e2e792990184939b209fa SHA-256: 06d29e5234724a769c36a9637fe74eb565c2b1d334f2a3708f23aa6fd1609a8f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of links, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://akhsmombasa.com/clients/861898/File/winikosavedajositexali.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f83df25250---jiwavote.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/696658f19ad8d235651bba23771d2e98/firuronavedagitoguxa.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/160b87f245a22f---58242927078.pdfIn PDF document text
    • http://altadirezione-consulting.it/userfiles/files/xajop.pdfIn PDF document text
    • http://xnkvinatimex.com/uploads/files/welaxilomexod.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/pebafiwatalifu.pdfIn PDF document text
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/sdhe2p4nb8vi66pjkv41oogith/lijozumamivaw.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160dd76dec2009---zexafutevekubi.pdfIn PDF document text
    • http://wahluenfty.com/userfiles/14180057837.pdfIn PDF document text
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b2601ed29---70256065791.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/2198175061.pdfIn PDF document text
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160bd3dcec64ef---60843990803.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/51841c0a2407700641a1bf57de8d6c2e/fokirenurijirimasuxuroze.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c627a27214a---2728168708.pdfIn PDF document text
    • https://npkfertilizerproduction.com/d/files/popipigutizepejaganovevo.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbb5aa3d73a---savixilululivoven.pdfIn PDF document text
    • https://komunalno-vrgorac.hr/files/nopuludetenotijoneru.pdfIn PDF document text
    • https://bangprice.combangprice.com/beta/cms_image/file/97516755103.pdfIn PDF document text
    • http://www.binghan.my/userfiles/file/vemejasaxa.pdfIn PDF document text
    • http://xn----1-6cdapb2bdyqawnpcindqfc.xn--p1ai/media/file/xezokanogozalazunabixuzat.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/ravebinakifokema.pdfIn PDF document text
    • http://gediklimakinahidrolik.com/resimler/files/lofipizedezoxufe.pdfIn PDF document text
    • http://camonetinternational.com/files/file/40833636088.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=acuerdos+de+paz+con+las+farc+pdfPDF link annotation
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001611c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1611C 10564 bytes
SHA-256: 8c48fbffa2cc6419f7e9f1a8432106a9269efaabfa051ffdd3e8116238721b4a
font_01_sfnt_off00017962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17962 20796 bytes
SHA-256: 2b481fa103eb252a79b6ce8062892f2ac23393a5f53567d326e9d02525297ab5
font_02_sfnt_off0001ae36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE36 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1