Malicious PDF — malware analysis report

Static analysis result for SHA-256 21074bcadcfca165…

MALICIOUS

PDF

107.7 KB Created: 2021-04-08 09:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dca6b4a975a8424c3f6f1dce8073c5e9 SHA-1: 55dcf8e6c37c0b722a1a09bd751036b8a1ef23bb SHA-256: 21074bcadcfca1653f214dbc0d4866f1431335d715dca961a6b023a8b6a055a0
216 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses brand-impersonation credential phishing. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • 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://sonoxezepokamev.weebly.com/uploads/1/3/3/9/133999938/tazelarovuwaga-vonegijabotaga-vebojoxe-dinakedirumuniz.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://vilenefex.ru/wix?keyword=pixel+gun+3d+hack+ios+jailbreak PDF link annotation
    • http://bcpzonasegura10beta-viabcp.com/for_honor_highlander_guide_deutschkpai9.pdfIn PDF document text
    • https://sonoxezepokamev.weebly.com/uploads/1/3/3/9/133999938/tazelarovuwaga-vonegijabotaga-vebojoxe-dinakedirumuniz.pdfIn PDF document text
    • https://texexavif.weebly.com/uploads/1/3/1/4/131454683/1280e4b0597.pdfIn PDF document text
    • https://gunubamevozapub.weebly.com/uploads/1/3/3/9/133997290/7386111.pdfIn PDF document text
    • http://mscgis.net/rafuw5qabo.pdfIn PDF document text
    • https://gugozakeku.weebly.com/uploads/1/3/4/5/134588211/3573303.pdfIn PDF document text
    • https://bemuzulezevateb.weebly.com/uploads/1/3/4/4/134440878/3295695.pdfIn PDF document text
    • http://trendmobile.ru/mechanical_engineering_average_salary_london2vqd6.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/barefozubafineru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitulogakapede.myartsonline.com/fundamentos_de_bacteriologia_y_micologia_veterinaria_carter.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/boguporabizoxamenawe.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/35336620053.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/rejaxutidojumejid.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/how_to_use_a_sekonic_l-308s_light_meter.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/the_color_of_magic_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/what_is_agreeing_and_disagreeing.pdfIn PDF document text
    • https://s3.amazonaws.com/nitatotol/capacitores_exercicios.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/27157627814.pdfIn PDF document text
    • http://susabumo.atwebpages.com/australian_passport_application_form_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/sed_and_awk_tutorial.pdfIn PDF document text
    • http://tuminexozuvino.atwebpages.com/20516544725.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001692b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1692B 5712 bytes
SHA-256: fd30b3f11f2c42dd9da511723143e8283f6e372953600dd0128a6f4d2835d6ac
font_01_sfnt_off00017c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C98 10624 bytes
SHA-256: 427b3a58127a5eaec1d3593d050433d21d8129ae9cad292f0e62936583ad894b

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