Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e9cb2cbfc01a3ab…

MALICIOUS

PDF

76.1 KB Created: 2021-06-05 11:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ff1880cc8a70859e5355ce2d890097a2 SHA-1: 250510b5e3c8d720a946da90a49fbdf8359822f0 SHA-256: 2e9cb2cbfc01a3ab2bb68d56254abe44eff81617b766cd8b752ac4189ac12e6e
186 Risk Score

Malware Insights

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

This PDF document was identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as a phishing trojan. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The embedded URLs likely lead to malicious content or phishing pages.

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.
  • 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://oniceh.ru/pbw?utm_term=where+can+i+find+a+thermal+fuse+for+my+dryer PDF link annotation
    • https://dusimajigedavim.weebly.com/uploads/1/3/1/4/131453199/da6dcd082ee70bb.pdfIn PDF document text
    • https://tobapedez.weebly.com/uploads/1/3/5/3/135344168/4364612.pdfIn PDF document text
    • https://jujoxiro.weebly.com/uploads/1/3/4/8/134875196/neponutezijow.pdfIn PDF document text
    • https://gaxuzuwe.weebly.com/uploads/1/3/1/8/131871814/c4444.pdfIn PDF document text
    • https://vapulorefemefiz.weebly.com/uploads/1/3/5/9/135956910/3609637.pdfIn PDF document text
    • https://mereduje.weebly.com/uploads/1/3/4/7/134751500/navewefibizuwapu.pdfIn PDF document text
    • https://mebitulipavore.weebly.com/uploads/1/3/4/3/134339985/vemexonategadoguwir.pdfIn PDF document text
    • https://wadagubabu.weebly.com/uploads/1/3/4/7/134709622/4297358.pdfIn PDF document text
    • https://patobozojewe.weebly.com/uploads/1/3/4/8/134863794/edc1cf5fbeb9e68.pdfIn PDF document text
    • https://vawenajibafadak.weebly.com/uploads/1/3/1/3/131384306/9ad6ce8f7.pdfIn PDF document text
    • https://ligibumifi.weebly.com/uploads/1/3/4/6/134647936/7182273.pdfIn PDF document text
    • https://ludakugoru.weebly.com/uploads/1/3/4/6/134698973/dee8c97e.pdfIn PDF document text
    • https://sugowula.weebly.com/uploads/1/3/4/6/134646485/d13f2270.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/e151b170287de.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zosajivapesi.pbworks.com/w/file/fetch/144604185/21052573145.pdfIn PDF document text
    • http://fotikeralo.pbworks.com/f/the_gendered_society_5th_edition_free.pdfIn PDF document text
    • http://mikabipi.pbworks.com/w/file/fetch/144438804/jinananejitepovugofarejo.pdfIn PDF document text
    • http://volikedejefa.pbworks.com/f/libro_de_nanda_nic_noc.pdfIn PDF document text
    • http://zilebunod.pbworks.com/f/27137088143.pdfIn PDF document text
    • http://sonopewobu.pbworks.com/f/does_a_whirlpool_top_load_washer_have_a_filter.pdfIn PDF document text
    • http://bilabegape.pbworks.com/f/what_does_the_6_of_wands_mean_in_a_love_reading.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_off0000ebb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB4 5376 bytes
SHA-256: f91e5cedcf7e19433c883be1725c93c53aacbfad75b9d2ee92d57dbf7d2796bc
font_01_sfnt_off0000fdea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEA 10836 bytes
SHA-256: 4c0483f547618cb1016f8f9b39cf961e7ee388be74e68e692b85a0f43980e643