Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2348833bb5cd5ae…

MALICIOUS

PDF

73.8 KB Created: 2021-03-14 22:10:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fd6fd3d8b66d6a300fde269da4471ec7 SHA-1: d7b1300b7469b02a7545ff02a7862ddae0946882 SHA-256: d2348833bb5cd5ae6ff3d4ff75556d10d1e6b43497af01551a7ff90f4ef46d9e
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of external links, characteristic of a link farm, likely intended for SEO manipulation or to distribute malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs point to various domains, suggesting a broad distribution network.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • 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://ponafet.ru/wix?keyword=little+tikes+hummer+h2+manual PDF link annotation
    • http://tuvuvadirozo.iblogger.org/avery_wilson_if_i_have_to.pdfIn PDF document text
    • http://idealslimitaly-official.site/dsc_what_is_itt565v.pdfIn PDF document text
    • https://ribofefafuf.weebly.com/uploads/1/3/4/7/134770843/kuxejajadajev_taduxad_baxod_desilulajixa.pdfIn PDF document text
    • https://dezazobe.weebly.com/uploads/1/3/4/7/134755526/xafexoj_zowulezetimu.pdfIn PDF document text
    • https://cdn.sqhk.co/ragejeli/igjjtVz/bofovudovavodesil.pdfIn PDF document text
    • http://ebay-coupon.ru/nixabisojemimop9p9yu.pdfIn PDF document text
    • http://rorejidefozuroz.iblogger.org/sozubesiger.pdfIn PDF document text
    • https://lumevukivejus.weebly.com/uploads/1/3/0/8/130874583/setitimoragiva.pdfIn PDF document text
    • https://cdn.sqhk.co/risubibasero/KFihics/monepujikurarewekinon.pdfIn PDF document text
    • https://cdn.sqhk.co/mimofeto/hhhhajj/39631567739.pdfIn PDF document text
    • https://loseseseveru.weebly.com/uploads/1/3/0/8/130813975/9505816.pdfIn PDF document text
    • http://hyipinvest.site/sony_wireless_headphones_mdr_zx770bn_manual3srad.pdfIn PDF document text
    • https://bokesavuxi.weebly.com/uploads/1/3/0/9/130968985/majogebagimek_mibemape_nizij_favulozo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://70010cfe-69b1-4fe9-a336-bdfe2418dc1e.filesusr.com/ugd/f1d680_3ebf8d50aa5149728fff1684f8898950.pdf?index=trueIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_2c496f94e06d481288f3bf83bad7fd90.pdf?index=trueIn PDF document text
    • http://pugijomo.epizy.com/latitude_and_longitude_worksheets_6th_grade_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81303be5-6c21-4bb4-afb9-dee948d54a02/komubituren.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5466b9e4-dbd2-42d2-9aae-7166bb703561/44165524980.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_off0000e3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B7 5064 bytes
SHA-256: 811195805db82aedeef7d42b0eaca725e75fa32ccf31ebf591f5e49904b398a1
font_01_sfnt_off0000f4c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C0 10992 bytes
SHA-256: 1bb7ed47b9ac1ff8a181f793243efd3106bc34f7b46d2695bd0f46f29ca5501f

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