Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c34e6eb417599c…

MALICIOUS

PDF

81.1 KB Created: 2021-03-31 13:01:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 4a6f068d6e6ce9bcc154fa81791dfa2c SHA-1: 9cf5f1d886cb7f5a2efc3abbd5fb6f40ca17c73c SHA-256: 00c34e6eb417599cb2be2b9c3a6401727149632b39df268c2b05e036151bd063
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 0.9995

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://zajinet.ru/wix?keyword=elizabeth+warren+the+two+income+trap+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419194/normal_5fe4f7d6212c1.pdfIn PDF document text
    • https://lolefisad.weebly.com/uploads/1/3/5/3/135344485/goles_mekika.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464734/normal_6037ccef570cc.pdfIn PDF document text
    • https://sezijaxafiv.weebly.com/uploads/1/3/1/6/131637080/zuvawawox_rasirab_fajifanoripidot.pdfIn PDF document text
    • https://zenozuniwilifa.weebly.com/uploads/1/3/4/1/134131556/latelopupewogabu.pdfIn PDF document text
    • https://kemipopebu.weebly.com/uploads/1/3/4/5/134585234/c3d7ca05dceef.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/7mvsajc/acrylic_nail_ideas_coffin_shape.pdfIn PDF document text
    • https://wisapemewe.weebly.com/uploads/1/3/4/7/134713478/xejevixozegoluvukoga.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/jYjxDih/xesudurebo.pdfIn PDF document text
    • https://deponoma.weebly.com/uploads/1/3/2/6/132696267/6b25a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381083/normal_605a231d23f85.pdfIn PDF document text
    • https://gibejuta.weebly.com/uploads/1/3/0/7/130776113/5347927.pdfIn PDF document text
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/6962c6d.pdfIn PDF document text
    • https://sedovabopidixo.weebly.com/uploads/1/3/0/8/130813108/6193400.pdfIn PDF document text
    • https://lusimijibujadex.weebly.com/uploads/1/3/4/6/134677052/d5d77.pdfIn PDF document text
    • https://cdn.sqhk.co/fazologim/eqhfa89/disetituzenan.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/fAliigf/lodug.pdfIn PDF document text
    • https://vakofariz.weebly.com/uploads/1/3/1/4/131438137/f3556bf.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
    • https://9ef77391-fdd1-48d8-ba15-364b07375333.filesusr.com/ugd/ebefdf_cff2a97c45f6478781fc151cf0126713.pdf?index=trueIn PDF document text
    • https://2863666b-9d79-467d-9aad-9eeb6dafbdf2.filesusr.com/ugd/6ee3eb_e509fee0e62b467d8a6ef38814998668.pdf?index=trueIn PDF document text
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_283c743500094c16a2db03aaabe3a43b.pdf?index=trueIn PDF document text
    • https://0621cc9e-6449-4e8a-a8bd-baee9ad62a2c.filesusr.com/ugd/affb4a_9467bd4a93a942adb024af97c4e23853.pdf?index=trueIn 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_off0000f0c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C3 5244 bytes
SHA-256: 5b0d2b02279b25651787b414eb1640574579383245a0a866fae54ce03ad8dda4
font_01_sfnt_off00010277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10277 11096 bytes
SHA-256: f063943b3a55d0285a2d7a6c0f718c2b835d3aec67d29b70c47e34acef4e068e
font_02_sfnt_off00012849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12849 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c