Malicious PDF — malware analysis report

Static analysis result for SHA-256 08ed5ed112f17045…

MALICIOUS

PDF

78.7 KB Created: 2021-03-31 22:03:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 69776e19549fe1580abd58478291e1bf SHA-1: bab3c1e571c89453142c0b0cc5374051e937d707 SHA-256: 08ed5ed112f170452a77acd66ab468350fde663751a93a2415f36f5c9aae5638
126 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically identified as a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://golowaki.ru/strik?utm_term=lamborghini+aventador+2020+%25D1%2586%25D0%25B5%25D0%25BD%25D0%25B0 PDF link annotation
    • https://cdn.sqhk.co/numanazolov/QCgiEhe/71772908729.pdfIn PDF document text
    • http://kurixuj.sportsontheweb.net/behavioral_disorders.pdfIn PDF document text
    • https://cdn.sqhk.co/samanugutu/h3heihL/83876347152.pdfIn PDF document text
    • https://cdn.sqhk.co/gudopokobipa/iI0Tie6/78914606409.pdfIn PDF document text
    • https://cdn.sqhk.co/nulusezitelo/cjagdMF/49459946607.pdfIn PDF document text
    • https://cdn.sqhk.co/xurazegoba/jjdhgnT/44359607581.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/sefepugolupalax/15586723536.pdfIn PDF document text
    • http://zulewuf.rf.gd/is_publicly_available_information_personal_data_gdpr.pdfIn PDF document text
    • http://sibedegaxuwo.rf.gd/hssc_admit_card_direct_link.pdfIn PDF document text
    • http://wusojomirewo.epizy.com/99049529082.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/xexevujitonukadiwitute.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/sunbeam_electric_blanket_flashing_on_high.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/soditexuvasupokekiruxamu.pdfIn PDF document text
    • http://vipuzala.myartsonline.com/93645820458.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/vasitebixevoga.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/comfortably_numb_guitar_solo.pdfIn PDF document text
    • http://widabuve.epizy.com/2783421419.pdfIn PDF document text
    • http://sakelukaje.epizy.com/95142889305.pdfIn PDF document text
    • http://rinotox.rf.gd/raxeke.pdfIn PDF document text
    • http://zevofelajasuz.epizy.com/18823617291.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_off0000e7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AE 5884 bytes
SHA-256: 10e770286bdc1b3a2dbb874cf092b17e09d8b9d1a6b416354b622c4b4b12f42f
font_01_sfnt_off0000fa98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA98 15688 bytes
SHA-256: ca469f9c8fca98653e3092fcbc66b17539dd0837f59bcecbb766fbe36746fe4b

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