Malicious PDF — malware analysis report

Static analysis result for SHA-256 29aeb518b42bd618…

MALICIOUS

PDF

74.9 KB Created: 2021-03-07 03:07:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: f6694e6ddc13fa4f71810f5a6478e788 SHA-1: 44dcc55eb511229f5e7e204faa7782ce47fed7e2 SHA-256: 29aeb518b42bd6183f450ac2558060c10db71ddf44b417d082019ba97645bd56
186 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains or link farms, indicating a phishing or SEO spam campaign. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a mechanism for redirecting users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/strik?utm_term=vizio+sound+bar+45+5.1 PDF link annotation
    • https://cdn.sqhk.co/ramazunor/igcw9ji/mujusirugulonasuwufanat.pdfIn PDF document text
    • http://2gusevshop.space/7539444130249th0.pdfIn PDF document text
    • http://filmera.ru/international_business_news_wsjgj71a.pdfIn PDF document text
    • http://begemot.space/garden_answer_bobo_hydrangeabc51u.pdfIn PDF document text
    • https://kopujigok.weebly.com/uploads/1/3/4/8/134862339/2940040.pdfIn PDF document text
    • https://vukekitap.weebly.com/uploads/1/3/1/4/131438073/vajug.pdfIn PDF document text
    • http://lnstagram-badge-verification.com/84323675843t1hcr.pdfIn PDF document text
    • https://cdn.sqhk.co/nubowolimit/agheEvl/voxib.pdfIn PDF document text
    • http://sevibifodome.getenjoyment.net/how_do_i_program_my_directv_remote_to_my_denon_receiver.pdfIn PDF document text
    • https://visatedujapi.weebly.com/uploads/1/3/0/8/130814459/kelelusinefusimu.pdfIn PDF document text
    • https://wejapunikiver.weebly.com/uploads/1/3/4/2/134266614/f281a3ec301.pdfIn PDF document text
    • https://nibapexi.weebly.com/uploads/1/3/0/9/130969889/9347691.pdfIn PDF document text
    • http://phillipen.online/198141396510m7g4.pdfIn PDF document text
    • https://cdn.sqhk.co/lukejisuvawe/BKhajaC/fadiwotube.pdfIn PDF document text
    • https://cdn.sqhk.co/solijisivono/3ifrheW/nutomalax.pdfIn PDF document text
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/wetuzag.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/company_safety_program.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://ruxatavebokoj.epizy.com/dish_network_no_sound_on_hd_channels.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDBA 4920 bytes
SHA-256: cd1c68feb5e6fd4e8f49b1833fafa996fa690f74f6b6b607ee43b1db6f849981
font_01_sfnt_off0000ee7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7F 9892 bytes
SHA-256: 37e3ba191d22d6ad5bae45b07b625f9eeeacc222f02663cbd59202dcf31f39d8
font_02_sfnt_off00011065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11065 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.