Malicious PDF — malware analysis report

Static analysis result for SHA-256 6802002b1a34abaf…

MALICIOUS

PDF

86.4 KB Created: 2021-03-03 20:56:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d3e3e1f8a68195f7a4655a5fcfc22eae SHA-1: e49caa2da0301b9cf1a88d42014a5cf8e11e187a SHA-256: 6802002b1a34abaf90ea449479b72b22c4799b1272d24cb2df35dd02967cfeb5
184 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded links, with at least one pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to fear or a potentially deceptive topic. No scripts were extracted, but the presence of malicious links strongly suggests an attempt to redirect the user to a compromised or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/123?utm_term=can+a+person+die+of+fear In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417530/normal_6022e732a9a20.pdfIn PDF document text
    • https://sosufafa.weebly.com/uploads/1/3/4/8/134862430/180056.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/bixetedotemowaxuriv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405186/normal_5ff7e841e3008.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/what_episode_does_ben_join_parks_and_rec.pdfIn PDF document text
    • https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/vivakagek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389376/normal_5ffeb202ae9f7.pdfIn PDF document text
    • https://bizonununifewe.weebly.com/uploads/1/3/4/7/134773553/4136104.pdfIn PDF document text
    • http://photoforce.ru/linnworks_email_templatee7rmv.pdfIn PDF document text
    • https://betijefozivur.weebly.com/uploads/1/3/0/7/130776077/pulerijizezozi.pdfIn PDF document text
    • http://fridgeservice.ru/innumeracy_john_paulos61i79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468827/normal_6031738338030.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/81325590031.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fosadexovoz.epizy.com/margaret_atwood_the_testaments_book_cover.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/workforce_tile_cutter_thd550_owners_manual.pdfIn PDF document text
    • http://lamisegowa.epizy.com/zebra_gk420d_setup_utility.pdfIn PDF document text
    • http://jokiperone.epizy.com/46493161130.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_off000116e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E0 4908 bytes
SHA-256: 754e41edc476310e072597b3e43b1d5f80d59baee92e198cf4764062848da90c
font_01_sfnt_off0001279d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1279D 10784 bytes
SHA-256: d7d968676b18c96edfde5f3d66dbe4385e425ad60ee43ec2239c33b6aa59a5c7

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