Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2fb42e02fd071a0…

MALICIOUS

PDF

77.4 KB Created: 2021-03-30 23:00:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ff7944525c1fdec8eeb00955ce2efa2a SHA-1: 09addeff29ed3b87d8f30c7165ffa9e6368949ef SHA-256: e2fb42e02fd071a016985a6bd29165069bde5776adabbb692496e4dbd8867c7c
186 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://lozipotod.ru/award?keyword=el+negocio+de+bienes+ra%25C3%25ADces+en+m%25C3%25A9xico+pdf PDF link annotation
    • https://mijonezogiju.weebly.com/uploads/1/3/4/3/134308960/2699532.pdfIn PDF document text
    • http://nubolats.xyz/6884461676nfxwf.pdfIn PDF document text
    • http://rojibitakuvekuw.scienceontheweb.net/58462585477.pdfIn PDF document text
    • https://kivomulugan.weebly.com/uploads/1/3/2/6/132695939/5170164.pdfIn PDF document text
    • http://telgrm.site/metozulefidibbvwzu.pdfIn PDF document text
    • https://vivenovexo.weebly.com/uploads/1/3/4/6/134695888/4765303.pdfIn PDF document text
    • http://dektesheff.xyz/jedexowaweganiigr.pdfIn PDF document text
    • http://jolixasij.sportsontheweb.net/43260288962.pdfIn PDF document text
    • https://zanolidades.weebly.com/uploads/1/3/2/6/132695759/jomejigifiko.pdfIn PDF document text
    • http://1offpark.xyz/vavuzidumuluxos5gg7w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ba526a3-a8f4-4268-a66d-a70064c919eb/40583715035.pdfIn PDF document text
    • https://fd0ef26f-7b8f-4c91-b3b2-19f7ec93487a.filesusr.com/ugd/4174bf_4d5605f250024f27a0e8c3c72980448f.pdf?index=trueIn PDF document text
    • https://5c09c65f-4728-49e3-9562-8692e696fc4f.filesusr.com/ugd/32acb1_b0829127fd084f3ab9d81528e7689388.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wujodibu/mawonavuwamiw.pdfIn PDF document text
    • http://votixeju.onlinewebshop.net/slewing_bearing_skf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc3dee6e-f36a-4e80-a677-5250debdfc89/poxesekajolexepipagirirat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9b62060-2fbf-4b2d-aeaa-536350a70fd2/how_to_charge_the_noco_genius_boost_gb70.pdfIn PDF document text
    • https://a39ac558-8fe8-437d-9e10-dc9402d6cb9c.filesusr.com/ugd/1ebe14_d7f182ef575c4975b239fd8e4fa81ba5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/28207122712.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_off0000ec10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC10 5836 bytes
SHA-256: 4c4273622ccc5154a0ba4d89f9f8039bdd32d81cfdae0cd1d19c6dd87d826e0f
font_01_sfnt_off0000ff92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF92 11712 bytes
SHA-256: 9ac34e9e4007866f08bb4779472cadf7aeed91f4be1c9f2860fe9302803b46f2

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