Malicious PDF — malware analysis report

Static analysis result for SHA-256 75260c1d7b91e399…

MALICIOUS

PDF

68.0 KB Created: 2021-01-14 18:58:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: bde6b037a93a7c5fd6905f6b3cb67663 SHA-1: edfafe1a08b184a8699312fc2b78f952d1d3fb3f SHA-256: 75260c1d7b91e3991a70319f7a999d95046b223917aa19ce4f17905885379207
184 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to redirector domains and disposable hosting services, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirector pattern, likely intended to lead users to malicious sites.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=north+attleboro+high+school In PDF document text
    • https://cdn.sqhk.co/numanazolov/DGmM2jd/best_video_to_gif_converter_software.pdfIn PDF document text
    • https://tiwofimobodes.weebly.com/uploads/1/3/4/0/134040820/f51383.pdfIn PDF document text
    • https://cdn.sqhk.co/gabazumad/hhnujcn/gunblood_western_shootout_cheat_codes.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/fhjicux/99515484783.pdfIn PDF document text
    • https://vedixoba.weebly.com/uploads/1/3/4/8/134864822/zirotimukawavog-melowalolim-rutevasi.pdfIn PDF document text
    • https://pitajuzijos.weebly.com/uploads/1/3/4/8/134885257/0699e1eee5047fc.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/DiiehgV/92176001841.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/gPKnicJ/detroit_gem_mineral_and_fossil_show.pdfIn PDF document text
    • https://daxivikulogator.weebly.com/uploads/1/3/4/3/134308382/keloza.pdfIn PDF document text
    • https://finuvowevemez.weebly.com/uploads/1/3/5/3/135397693/lijav.pdfIn PDF document text
    • https://cdn.sqhk.co/nakusunegud/ggHjggj/classic_arcade_game_box.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387807/normal_5febdf5019f76.pdfIn PDF document text
    • https://piborubaladedos.weebly.com/uploads/1/3/4/7/134764427/1650323.pdfIn PDF document text
    • https://lipowife.weebly.com/uploads/1/3/2/7/132740586/b01065cc.pdfIn PDF document text
    • https://bukivobiwizu.weebly.com/uploads/1/3/4/0/134097020/1237595.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/jgjeiRK/ping_pong_vr_ps4_review.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC04D 4852 bytes
SHA-256: cdfd28fe468b5c663ea62b8ea5a11f090f2a29b3b39ac0aed75ab9e3e8b68977
font_01_sfnt_off0000d0e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E4 10684 bytes
SHA-256: 36fa8e880ed87cda6b2f7a05ae5122b6430477c99ee54bea81e438b675e2db49
font_02_sfnt_off0000f516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF516 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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