Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22125ba79d6ac7f…

MALICIOUS

PDF

109.3 KB Created: 2021-03-18 13:07:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 589e7e70eb70848ddb34c38728028292 SHA-1: e427efd271ab61383c6236e7b71183d992d8c366 SHA-256: e22125ba79d6ac7f091b0796f2db9dfadcfc47ce9a354fb50a4321c89e752137
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF file is flagged as malicious by ClamAV and an ML classifier, exhibiting characteristics of an advance-fee scam. It contains numerous external links, suggesting a link farm or redirection mechanism, and includes lures for callback phishing or tech-support scams. The presence of multiple external URIs and the PDF_SEO_LINK_FARM heuristic indicate a focus on directing users to potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 7

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://kuzutuzo.ru/aws?utm_term=cyberpunk+2077+ps5+pricerunner
    • http://roxedizusugu.mywebcommunity.org/sexowulopab.pdf
    • https://cdn-cms.f-static.net/uploads/4409396/normal_60148b7cb43a2.pdf
    • https://pazuvokase.weebly.com/uploads/1/3/4/6/134615635/baforudazoze.pdf
    • http://fulukegoror.getenjoyment.net/mulajerubilejiku.pdf
    • https://cdn-cms.f-static.net/uploads/4446944/normal_604cd78b5dddb.pdf
    • https://static.s123-cdn-static.com/uploads/4446917/normal_5fe54d41db9cf.pdf
    • http://vowewudimo.mypressonline.com/how_to_export_garageband_to_wav_ipad.pdf
    • http://vosojivaru.mypressonline.com/fuxelitebu.pdf
    • http://liwexun.mywebcommunity.org/chemistry_organic_compounds_list.pdf
    • http://ketaton.mywebcommunity.org/naval_architecture_free_download.pdf
    • https://nafepamozox.weebly.com/uploads/1/3/1/0/131070284/dugagosij-navifizarizelej-gijet-dijujeginosi.pdf
    • https://fulodovujigiw.weebly.com/uploads/1/3/4/0/134016909/kuwonesuxifojezidufa.pdf
    • https://cdn-cms.f-static.net/uploads/4417805/normal_6021f02d6303a.pdf
    • http://xubanapirobula.mypressonline.com/felebinerosakuzovimu.pdf
    • https://cdn-cms.f-static.net/uploads/4529095/normal_603d43eab00c3.pdf
    • http://widonatozeg.mypressonline.com/guxudetizofajoderoma.pdf
    • https://cdn-cms.f-static.net/uploads/4387929/normal_6030e8f254f6a.pdf
    • https://cdn-cms.f-static.net/uploads/4412599/normal_60157dfe64b82.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/f5a593f4-3249-426f-83cd-d788a3a83cd1/foucault_panopticism_summary.pdf
    • https://uploads.strikinglycdn.com/files/e8f8cf2e-b9fd-4373-ab9e-f2c8611074eb/wanisepoboxelolo.pdf
    • https://uploads.strikinglycdn.com/files/2d2c3459-0331-49dc-b70b-b60fb8b7416a/83394837913.pdf
    • https://uploads.strikinglycdn.com/files/3f562864-88f6-4fd2-9691-43dea28f5987/23814765740.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014fb4.bin
3b6c3edccbbdf68622c80e44ac099bd4bffa00507f4f1bc839f0bdbf087aa810		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14FB4 3080 bytes
font_01_sfnt_off00015abe.bin
4acbd2b787f732ef113fb6284039741c00216e71bcc2f2f9a57ae4552300598b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15ABE 5184 bytes
font_02_sfnt_off00016c7a.bin
4e9dcbbbd508a9a124cfa93ec88445e9b1d509a78874827629f6e90902c42e8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C7A 13788 bytes
font_03_sfnt_off000198df.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x198DF 4324 bytes

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