Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2514cb991800237…

MALICIOUS

PDF

76.0 KB Created: 2021-03-08 13:27:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3cad653123e232d076412e899ada1806 SHA-1: bac2b87643e8ca78e858def1bfa916976452902f SHA-256: e2514cb991800237be18fba2e8f572b7db7342076eeb1874e7b273adf860eeaf
176 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is malformed and contains a link farm, suggesting malicious intent. The embedded URL points to a domain associated with SEO spam and potentially malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to malicious sites, likely as part of a phishing or malware delivery scheme.

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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://fokemale.ru/award?keyword=english+synonyms+words+pdf PDF link annotation
    • https://botiwugagow.weebly.com/uploads/1/3/1/8/131872238/5988cd06814f7.pdfIn PDF document text
    • http://sadovik.me/tipos_de_funciones_del_lenguaje_metalinguisticaelpz8.pdfIn PDF document text
    • https://cdn.sqhk.co/mogowepuw/jeMhdij/zombie_derby_2_download_for_android.pdfIn PDF document text
    • https://sakedupepig.weebly.com/uploads/1/3/4/3/134355988/wiwujafu-jogox.pdfIn PDF document text
    • https://kofagegupuk.weebly.com/uploads/1/3/2/3/132302723/ralobepupuwosu.pdfIn PDF document text
    • http://9gusevshop.space/84124964455k8syl.pdfIn PDF document text
    • https://cdn.sqhk.co/nugilatunu/c2gc2gc/dragon_ball_opening_latino_full.pdfIn PDF document text
    • http://lessonsonline.site/50257288870gefrq.pdfIn PDF document text
    • https://zujujoweb.weebly.com/uploads/1/3/5/2/135297083/47c605e516835.pdfIn PDF document text
    • https://cdn.sqhk.co/jaziwuke/gdoTcja/95812628659.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/what_is_the_subject_of_statisticssch0i.pdfIn PDF document text
    • http://draiwenstore.online/88688184093o7tmv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/034f5872-933d-4445-9fc7-daa2a9621184/where_can_i_find_a_list_of_all_stocks.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/jixuzelikix.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/dakopireto.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/50033628817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02ad15b7-ca7e-4777-aa59-c5fd039bb903/elastic_potential_energy_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/european_commission_guidelines_variations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a41019f-545e-4752-b845-16b31b7835cf/dawuxekeruzosapumewufot.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/fries__sides_wendys_menu_nutrition.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/52787676515.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE264 4984 bytes
SHA-256: 79564f3b7a8f294f788c5ef62fdbe7a959683f8a6a1dd2b31e75c33e89d5ccaf
font_01_sfnt_off0000f32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32A 9792 bytes
SHA-256: 640205fe3854beefabef2dc1da98db379bb3363c6bf824d7ea2359ce77036663
font_02_sfnt_off000114ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114AD 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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