Malicious PDF — malware analysis report

Static analysis result for SHA-256 02def08762864d94…

MALICIOUS

PDF

85.7 KB Created: 2021-04-08 07:03:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 442adc3677c84934b1b8f87c2d4070e9 SHA-1: f47aa0f7821b70dd523007dee0800b148da7c957 SHA-256: 02def08762864d94ff059860b99cdfb214dfe874488e7bba00889d1f6fc6c3ae
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The ML classifier and brand impersonation heuristic strongly indicate malicious intent, specifically a credential phishing lure impersonating Microsoft. The document contains numerous embedded URLs pointing to disposable domains and link farms, suggesting an attempt to redirect users to a malicious site. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with common phishing techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://ponutafozo.weebly.com/uploads/1/3/4/7/134705240/9731475.pdf.
  • 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://lozipotod.ru/123?utm_term=botanist+level+guide+ffxiv PDF link annotation
    • https://ponutafozo.weebly.com/uploads/1/3/4/7/134705240/9731475.pdfIn PDF document text
    • https://cdn.sqhk.co/filemowa/36KB7VA/rilewejamogawugizuvabeb.pdfIn PDF document text
    • http://xufopizaxeto.medianewsonline.com/kurobawu.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/jidGMhg/zegizuwofewim.pdfIn PDF document text
    • https://zisefedid.weebly.com/uploads/1/3/4/7/134767142/vopezufadenuzu_xevuzina.pdfIn PDF document text
    • https://cdn.sqhk.co/nowovadizeb/mvNgj0h/54489233297.pdfIn PDF document text
    • http://dobataxip.iblogger.org/js_open_blob_in_new_tab.pdfIn PDF document text
    • https://logutidukikov.weebly.com/uploads/1/3/1/3/131380383/busifamemip.pdfIn PDF document text
    • http://xenakasewexibal.sportsontheweb.net/tuxebuvunemito.pdfIn PDF document text
    • https://jofenunamupil.weebly.com/uploads/1/3/4/3/134343358/jijezoxa.pdfIn PDF document text
    • https://cdn.sqhk.co/futevanu/iaHiaSm/nobezaz.pdfIn PDF document text
    • https://wofexajolevesi.weebly.com/uploads/1/3/5/3/135302186/6850c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wumafopid.onlinewebshop.net/mejuwusawururuvotazarajej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4aef9a6-3c88-4ba7-990b-e0705a9a9044/dos_command_list_files_in_folder.pdfIn PDF document text
    • http://tijiwef.epizy.com/zelda_ocarina_of_time_walkthrough.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1155422-c295-4979-9ca2-3ec2802b3032/72309571535.pdfIn PDF document text
    • http://wuragumok.atwebpages.com/how_to_support_diverse_learners.pdfIn PDF document text
    • http://kifesafijupesob.onlinewebshop.net/marriage_biodata_sample_download.pdfIn PDF document text
    • http://piripulire.epizy.com/dr_bernstein_diet_meal_plan.pdfIn PDF document text
    • http://lipabarud.atwebpages.com/zodas.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E28 5156 bytes
SHA-256: 08a51dc629452ada3c1804eda838c5a957ddb0ca017538d546931886075fbbf1
font_01_sfnt_off00011fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD9 12356 bytes
SHA-256: fc6029c16f2b9d4fe346b904a8f99cf1fb70cf1edb01fd2beec60de95a6af84d

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