Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f306ce8b13c4e9…

MALICIOUS

PDF

75.3 KB Created: 2021-03-08 19:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 4a6f1c2210cc2047cf50d9ef73801b4d SHA-1: 5c0cc5b3b714bd88bb843635854dfa7f85b483f1 SHA-256: 04f306ce8b13c4e9a5c339dc8703f3c07884af5e79df5ce5dd4f7d7b026f594f
186 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 0.9999

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://bologen.ru/strik?utm_term=p90x+lunch+recipes+phase+1 PDF link annotation
    • https://xugubevowasisof.weebly.com/uploads/1/3/4/8/134885616/boxag.pdfIn PDF document text
    • http://instasale.company/94451745640rqgpz.pdfIn PDF document text
    • https://cdn.sqhk.co/molivovuki/Hjj1jc4/battle_angel_alita_last_order_omnibus_download.pdfIn PDF document text
    • https://nanopimage.weebly.com/uploads/1/3/1/3/131398258/xabeburasorufu.pdfIn PDF document text
    • https://cdn.sqhk.co/xexogataza/eicijjf/candy_fruit_mania_crush_blast_jewelry.pdfIn PDF document text
    • https://madoguwulivusi.weebly.com/uploads/1/3/0/7/130775056/nifuxero_zakobutuwexupu_xegufozusesi.pdfIn PDF document text
    • https://cdn.sqhk.co/riragimi/heajeid/dragon_raja_all_trainee_chef_recipes.pdfIn PDF document text
    • https://wozalaro.weebly.com/uploads/1/3/4/3/134326714/xafiz.pdfIn PDF document text
    • https://zedunuburow.weebly.com/uploads/1/3/4/0/134042823/vakeletadaragum-pofipim.pdfIn PDF document text
    • http://insta-sale.site/sat_october_2017_international_answers0xtft.pdfIn PDF document text
    • http://xevusezes.medianewsonline.com/papuvelomigikadamununiva.pdfIn PDF document text
    • http://lebepufu.mypressonline.com/fikojozepun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://laxukumelukadut.myartsonline.com/asus_ac68u_firmware_upgrade.pdfIn PDF document text
    • https://93dbb2ad-f1e8-4c6c-adfd-2ef134399473.filesusr.com/ugd/df4650_832956f1010c44bdb9ec81c7c43a4a5c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/xekexemip.pdfIn PDF document text
    • https://3568c1c9-c281-4b9a-9ea9-d5d291e0176b.filesusr.com/ugd/e5d8db_b3453d3d92c54958bf80c56cd7370bdf.pdf?index=trueIn PDF document text
    • https://c301b42c-deab-4116-afcd-a09dd0728425.filesusr.com/ugd/4bb894_e4196d2ac4b943369029f2cf41f07a7e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xokebore/angular_5_blob.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_off0000e84f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84F 5440 bytes
SHA-256: 51b59fe88944ffd712dc088ec4f4258af9267b806b8c80b5b04a2bc21dc114be
font_01_sfnt_off0000facc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACC 11040 bytes
SHA-256: 4b0b2889d8298932d879cdcf34892a0bb08176a049b01c8c1ad6662f8a892ec8

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