Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ab0cdb8ba947d9…

MALICIOUS

PDF

72.0 KB Created: 2021-03-02 20:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fc132ea16fec73bb821685a8894cc976 SHA-1: 13369f8731634605b2bef8d6bdabc4ff40367294 SHA-256: 95ab0cdb8ba947d97ae323aabd013b664b8c7aba537b864202fc425618574c1e
156 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. 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 0.9998

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 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.
  • 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/123?utm_term=why+is+my+backup+camera+flickering PDF link annotation
    • https://vamarimorojikav.weebly.com/uploads/1/3/4/6/134640123/5505897.pdfIn PDF document text
    • https://vivesajepud.weebly.com/uploads/1/3/0/9/130969004/nujiw.pdfIn PDF document text
    • http://kimokabif.medianewsonline.com/add_cd_player_to_bose_radio.pdfIn PDF document text
    • http://pimazisiperej.iblogger.org/32034406587.pdfIn PDF document text
    • http://zakosemej.mypressonline.com/rofen.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/sakaburepagase/12297302675.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/amore_e_psiche_storia.pdfIn PDF document text
    • http://jutejuviwolopis.rf.gd/commando_2_full_movie_2013_filmywap.pdfIn PDF document text
    • http://xoxasosopu.epizy.com/como_empastar_sheetrock.pdfIn PDF document text
    • http://rebivik.epizy.com/97321848005.pdfIn PDF document text
    • http://zevusup.atwebpages.com/19203788507.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/jelij.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/requisite_boots_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/cisco_bgp_configuration_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/lunejifafugusiwolotiti.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/lajelaburuj.pdfIn PDF document text
    • https://s3.amazonaws.com/waxegatulo/apa_citation_guidelines_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/nikon_dslr_d5100_price_in_saudi_arabia.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/what_position_can_a_14_year_old_work_at_chick_fil_a.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_off0000da83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA83 5748 bytes
SHA-256: 331821a8b5790a614cf49ddeb329fe79f50c52620f14b751dce57f91e38c9b7b
font_01_sfnt_off0000ee04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 10844 bytes
SHA-256: 621b065082e50aec37b650c14f67f05c316e3f384188313bcad248d61722223f

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