Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7225d6f3fcb659e…

MALICIOUS

PDF

94.3 KB Created: 2021-09-07 19:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 80967e35939b7ed0b8ed1c625808eec3 SHA-1: 1fcdd3d461f1b3117eb5afffeb41ac1c13a5ed2e SHA-256: e7225d6f3fcb659ecbd55d28bc3a70f2db220c9b404e9c0529d25fa79ffbe482
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to deliver second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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 https://coretry.ru/uplcv?utm_term=elasticity+physics+12th+notes+pdf PDF link annotation
    • http://spy-military-labs.com/userfiles/file/bagavifuwomos.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/fb13dd12551c0328e63c85491e1bdaaa/74194372955.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/4794c66c2c6284d23204656db98298df/36672910795.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/2cd67fb9673c6874759a4d7ebe4a961a/14165538714.pdfIn PDF document text
    • http://energy-labels.nl/userfiles/file/xabana.pdfIn PDF document text
    • http://aiswaryamatrimonials.com/fck_uploads/file/kudamulumejubeke.pdfIn PDF document text
    • http://creativeindustries.ru/uploads/userfiles/file/63885700992.pdfIn PDF document text
    • http://kieryk.pl/img/userfiles/file/fafokogamukelavogoduxoj.pdfIn PDF document text
    • https://valerart.com/ckfinder/userfiles/files/josirulurarigeveginepe.pdfIn PDF document text
    • http://majorpropertygroup.com/userfiles/files/pilepakamir.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160963079458dc---rixotexemadizaveser.pdfIn PDF document text
    • http://dr-temt.ru/images/file/koworewu.pdfIn PDF document text
    • http://pretaporter-pegah.com/userfiles/file/boxexapilij.pdfIn PDF document text
    • http://jadeite.ru/images/file/mamemomisesanetujavifumu.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/0c68f58de8b81cd307c307cc83d083bc/nakimetozaxagexamagezu.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d19d68a355---68818001949.pdfIn PDF document text
    • http://douzonebnf.com/upload/file///litunuziligukidaneger.pdfIn PDF document text
    • http://studiofelician.com/userfiles/files/gukivikexajen.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/7b5cb356675ef93f328895c6fa0ec2e3/33846938400.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160711ebb20cf1---nijeluwivabidejedutovotuj.pdfIn PDF document text
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/b66e0bd3a1115a30a1d157663ccce4a2/70621316823.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849ca49a496---mipaf.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e631211967f---69931282640.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10551 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D68 10884 bytes
SHA-256: a6be6f99310113beace0b28d85a7f589c3f5c49048f4e5d1420a70826c1f3f5e
font_02_sfnt_off000136a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136A1 20040 bytes
SHA-256: 2868d9dc0866c87034a59331424390aece7622aeca2749c6015de7ae0d14f1c0

Open this report in the interactive analyzer, or submit your own file for analysis.