Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69f30608c715fcf…

MALICIOUS

PDF

77.0 KB Created: 2021-05-14 07:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 6372142ecf09b0a8fb5d91a37ddf9fe3 SHA-1: edb2452482882eaa395a0feef054af658a112b13 SHA-256: f69f30608c715fcf42fb76f0f70d16d574ffd01edeb3fa1cabf8f23264d4cd14
216 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to direct users to malicious sites. The 'SE_BRAND_CREDENTIAL_PHISH' heuristic indicates a credential phishing lure, and the 'ML_NYX_PDF_MALICIOUS' score is very high. The presence of embedded URLs and the ClamAV detection further support its malicious nature, likely serving as a phishing document.

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
  • 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.
  • 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://fezagexagowib.weebly.com/uploads/1/3/5/3/135313062/vefew.pdf.
  • 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://midufefew.ru/strik?utm_term=reflexive+verbs+practice+test PDF link annotation
    • https://fezagexagowib.weebly.com/uploads/1/3/5/3/135313062/vefew.pdfIn PDF document text
    • https://bufaxivija.weebly.com/uploads/1/3/1/3/131383981/4164692.pdfIn PDF document text
    • http://cashthe.ru/snapper_mower_blade_26691yu0jd.pdfIn PDF document text
    • http://biotringel.shop/54338657110iqfkc.pdfIn PDF document text
    • http://weraka.online/avg_pc_tuneup_free_softoniceon4y.pdfIn PDF document text
    • http://dreabling.online/932669428266pvxc.pdfIn PDF document text
    • http://azalea.store/243160868991wek8.pdfIn PDF document text
    • http://poradoit2.site/sagigitatirawipewaffimzb.pdfIn PDF document text
    • http://instapodarok365.site/884552397205gxiq.pdfIn PDF document text
    • http://bigpleasure.ru/parrot_mki9200_update_file_download5u1bg.pdfIn PDF document text
    • http://artrosil.xyz/how_to_use_lowrance_hook_5_splitshotluuoq.pdfIn PDF document text
    • https://zeraxoxuret.weebly.com/uploads/1/3/4/6/134642117/3512bc1c0.pdfIn PDF document text
    • https://wezawemexa.weebly.com/uploads/1/3/1/4/131410399/kopopega.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/86862168216.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/52575140095.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/georgia_dmv_permit_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebed8e12-f92b-4d2c-aaad-6ec4faa4014e/list_the_3_types_of_business_operations.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromisixinolib/43158788597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eed809b3-126e-4468-a7a3-0640afe60ba3/reasons_for_using_golden_hour_principles.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/rogejabupuzadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0a9d479-8c68-4baf-a811-4cacfb9117cc/interurban_train_map.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/dufimanoxekigefasowa.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/pitesebumosat.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_off0000ecfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFE 5284 bytes
SHA-256: 9ff64bf27f49d69a08808ed059e118f3d6599436aa87e4a534205a9fb16fbbac
font_01_sfnt_off0000ff15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF15 12556 bytes
SHA-256: 9d4beacf4b1e12f9a7ca9528850cb3d85267ea97b22befc76972939a91454d98

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