Malicious PDF — malware analysis report

Static analysis result for SHA-256 971f8fcc419bdebf…

MALICIOUS

PDF

80.7 KB Created: 2021-03-01 15:30:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 794d960407bea0b870a82e83c35ba553 SHA-1: bea814c1cc13b8053bc5a5c729f5814e51806d45 SHA-256: 971f8fcc419bdebf41185740541e74614b7f1bec6ac54e82147fed56b3bdb1aa
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs pointing to disposable hosting and link farms, suggesting an attempt to redirect users to malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicates this is a link farm designed for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://bologen.ru/123?utm_term=what+pods+can+be+used+in+nespresso+vertuoplus PDF link annotation
    • https://cdn.sqhk.co/xawodoze/did9Dgf/claw_machine_arcade_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/xotosobupis/gdxMMfr/20408502762.pdfIn PDF document text
    • http://present-mag.ru/what_is_an_argument_in_essay_writingwjo81.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/pudovalofowolege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469126/normal_5fd67e5ab5a02.pdfIn PDF document text
    • http://gutprod.xyz/the_book_of_enoch_mysteriesymaap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383571/normal_5ff947b45d2cc.pdfIn PDF document text
    • https://cdn.sqhk.co/lukapokobejo/Y4Zn2gd/41136477029.pdfIn PDF document text
    • https://cdn.sqhk.co/tabewinudeka/LjjPgju/79463000566.pdfIn PDF document text
    • http://jirafka.space/how_to_in_text_cite_an_online_newspaper_article_in_apa_formatsse84.pdfIn PDF document text
    • https://cdn.sqhk.co/xonoguduzob/IGE7ggt/wordscapes_level_8296.pdfIn PDF document text
    • http://bibopasaxuvibu.mypressonline.com/traductor_espaol_a_portugues_brasil_gratis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371269/normal_600a54164e493.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417983/normal_60030b112a5a4.pdfIn PDF document text
    • http://glawerry.online/owners_manual_cancun_rentalsf8zmv.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/sjh6ty1/75540035742.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/cgiskjh/snes_classic_hack_games_list.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/datarofapakil/32814607265.pdfIn PDF document text
    • http://sabixukavizom.myartsonline.com/how_to_use_craftsman_82344_autoranging_multimeter.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/dunumixowativ.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/aiou_ma_admission_fee_information.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_off0000faa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA0 5376 bytes
SHA-256: b05d1665af7c846c98e65bb289946ca52726425ceb1b09e32286c50ef196f8d4
font_01_sfnt_off00010ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CE7 11464 bytes
SHA-256: ad8ccb29d217ec848cc48cd99b47b2bfb1adff996d15aafd7294ee823f598581

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