Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0b0e5d99d8b159…

MALICIOUS

PDF

204.6 KB Created: 2021-03-17 16:36:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: c9cd694c8d0fb7bf6950ed593d7e0fc1 SHA-1: 28612f39b1b9a9f06ccfa9eeaf8460f363776197 SHA-256: 6f0b0e5d99d8b15903890e80470987b2ebb09c8acd5105316b55d630a13d9295
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a high-confidence ML classifier flag and a critical ClamAV detection, indicating malicious intent. The presence of a PDF_SEO_UTM_REDIRECTOR_LINK heuristic firing suggests the document is designed as a lure for phishing or malware distribution, using a redirector URL to obscure the final destination. The embedded URL points to a suspicious domain, further supporting the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://mezovuduw.ru/strik?utm_term=factories+act+1948+book+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449419/normal_5ff826ab07ba6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368736/normal_5fe2aaab51dea.pdfIn PDF document text
    • http://migerov.xyz/31157969866epbdd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488315/normal_5fc91bb881c20.pdfIn PDF document text
    • http://flowerport.shop/first_grade_learning_games_full_apk05rsk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426072/normal_603fd1f06992a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405953/normal_604c9c96cd116.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460968/normal_600eb81c2ce6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496584/normal_600dad264e17d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463809/normal_5fd3a2f93544b.pdfIn PDF document text
    • http://tubipiguposazi.22web.org/34324740319.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446382/normal_5ffd4c73d8bc3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zufagubiles.epizy.com/28558965520.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/28614686569.pdfIn PDF document text
    • http://vegewamofuxa.rf.gd/briggs_and_stratton_quantum_engine_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/tuwubirimobefodufirigatot.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/resume_templates_word_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/53994118647.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/fixekanegod.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/carry_on_jatta_2_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/81524946576.pdfIn PDF document text
    • http://jogufek.epizy.com/spiderman_colouring_sheets_to_print.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002e78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E78B 5888 bytes
SHA-256: 5998eee6d9c4d874e7f9f305885d34c7f3c5b33abb4a77035f4ea21bd7c18d98
font_01_sfnt_off0002fbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBBC 11364 bytes
SHA-256: 2c76346232c6dd97d7f88e131af0a8fff5fcd3b882811a0d41882f1e10e365f9

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