Malicious PDF — malware analysis report

Static analysis result for SHA-256 7911fa4b80811809…

MALICIOUS

PDF

73.8 KB Created: 2021-04-08 04:35:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 036f7aa3528621484c19d20b2e0e07fe SHA-1: 14c6a922fad792f9cd2efcf0b02d1558ffdf54f2 SHA-256: 7911fa4b80811809e86a4f03aebf5ec1ef2f5b2547a835cf967427463e7e0c40
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM'. The 'SE_CALLBACK_LURE' heuristic indicates the document prompts the user to call a phone number, consistent with phishing or tech-support scams. While no scripts were explicitly extracted, the presence of external links and the callback lure suggest an attempt to trick the user into engaging with a malicious entity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://botokaw.ru/123?utm_term=report+caller+id+spoofing+to+fcc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4422150/normal_603d51f6582bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411229/normal_5fd9d23622964.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482191/normal_5fc695fcc90f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384819/normal_5fed0c2b1e2e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382209/normal_5ff4972e30442.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459937/normal_5fe269a014f78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426822/normal_604840dfd1283.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6f12065f-c45d-410c-b048-6ec23fb2b810.filesusr.com/ugd/02ccf7_e3026c3105b1479e9130bb8e95dbccb6.pdf?index=trueIn PDF document text
    • http://nipufafinera.epizy.com/coronary_heart_disease_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/2012_toyota_highlander_hybrid_limited_review.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/38979349303.pdfIn PDF document text
    • http://mojesab.rf.gd/funevadarotibizege.pdfIn PDF document text
    • https://636e06b3-920c-4898-b827-ef778bbbc101.filesusr.com/ugd/40512e_670633238b4e4ff1aef721e9e44af84b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/what_are_the_4_types_of_stressors.pdfIn PDF document text
    • https://933527c5-e005-4225-a3aa-05fee46c7696.filesusr.com/ugd/b51dd5_951892b7d1154042ab66d47265d4d2a3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/can_you_get_an_extension_on_your_drivers_license_renewal.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/anthrax_in_cattle.pdfIn PDF document text
    • https://0c43c058-97b3-435a-b041-a9f001bfa883.filesusr.com/ugd/791d74_135ceea8a8db4d518542915e4351ac83.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/graco_car_seat_compatible_with_uppababy_vista.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/69809799872.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/58421760302.pdfIn PDF document text
    • https://d0a6b1b1-1773-4622-8b5e-0ab5990a7ed3.filesusr.com/ugd/b90ba1_50e572dde603418a8c1ecd810b9f38b2.pdf?index=trueIn 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_off0000e280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE280 5328 bytes
SHA-256: 406844e2309df6280c18b70b11f4a567a6ae3fe2cc633e2e6b4275c747a24978
font_01_sfnt_off0000f4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B9 10864 bytes
SHA-256: e213e459b82645ad62acec919858c7da87d8b222493235713653a18e58a95c90

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