Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed1d1eda606e91f…

MALICIOUS

PDF

70.9 KB Created: 2021-03-16 19:16:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 992926e689fc5ae79e3b7f02dec222b5 SHA-1: 527bf708004f12d7e95189bda08bdd81b4393967 SHA-256: 6ed1d1eda606e91ff5b31692c5b1b3a905d98a0d357a5d72dc07067bbdb2f69c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 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=besteker+hdv-108+manual PDF link annotation
    • http://samelike.site/balenciaga_motorcycle_bag_dupencbcr.pdfIn PDF document text
    • http://community-day.ru/50802565023l0rp6.pdfIn PDF document text
    • http://vinorama.fun/4632664723863cyy.pdfIn PDF document text
    • http://trylait.club/nordictrack_cx_1055_for_saleai4i4.pdfIn PDF document text
    • http://carins.info/administracin_de_medicamentos_va_oral_en_pediatrainl3v.pdfIn PDF document text
    • http://eglo.club/schwinn_230_recumbent_bike_for_sale59637.pdfIn PDF document text
    • http://aycotoro5.xyz/d.a.r.e._communication_style_assessment11tvo.pdfIn PDF document text
    • https://pofimutazotoxo.weebly.com/uploads/1/3/4/0/134000188/4046774.pdfIn PDF document text
    • https://lefitujeledezov.weebly.com/uploads/1/3/6/0/136028835/9115267.pdfIn PDF document text
    • http://ompala.store/coraline_book_hardbackxg4sg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421476/normal_600d4f857f33e.pdfIn PDF document text
    • http://yewes.fun/large_format_camera_parts_for_salednbnb.pdfIn PDF document text
    • http://amandeepsadyora.com/3_billy_goats_gruff_teaching_ideasidg4l.pdfIn PDF document text
    • http://datab.vip/eragon_movie_in_hindi_download_filmyzilla4vxww.pdfIn PDF document text
    • http://yewes.space/how_to_troubleshoot_my_maytag_dishwasherczuoc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489843/normal_5ff671b1be14c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifofofavu.rf.gd/anti_vomiting_drugs.pdfIn PDF document text
    • http://zowolowoziru.rf.gd/how_to_set_up_an_appointment_at_the_dmv_online_florida.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_off0000d3a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A2 5656 bytes
SHA-256: fbc318eaf630d46003ab27f79d09c552b2a1502271e8ab163d09fe13b565a57e
font_01_sfnt_off0000e6c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C8 11376 bytes
SHA-256: 88f21be7470d7787978d3e367ced796723718ef0eef437b887a867e6d55dca6e