Malicious PDF — malware analysis report

Static analysis result for SHA-256 67a5245cc688ad3f…

MALICIOUS

PDF

88.0 KB Created: 2021-03-22 19:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ac36e3ad1807a70bf9e1b6cc0ec4e532 SHA-1: 2feaa92273dccf02734d0cd041730f67c9545ccc SHA-256: 67a5245cc688ad3f41d8b996209f05611d09045e1586284864163d4098f67b58
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, contains keywords related to a watch manual, indicating a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://baarspo.ru/wix?keyword=casio+sgw300-1av+multifunction+watch+manual PDF link annotation
    • https://cdn.sqhk.co/bomemenun/ihhGgjl/nanironiluna.pdfIn PDF document text
    • https://cdn.sqhk.co/zonigita/USbjdC7/historia_de_la_ortopedia_maxilar.pdfIn PDF document text
    • http://vukuradi.mygamesonline.org/jupijunipuluni.pdfIn PDF document text
    • http://wobijamitiz.iblogger.org/adamski_george.pdfIn PDF document text
    • http://nelilovodik.scienceontheweb.net/63384056190.pdfIn PDF document text
    • http://zevibeponakat.getenjoyment.net/20849755335.pdfIn PDF document text
    • https://cdn.sqhk.co/matikefateri/ahicggg/the_sandbox_craft_play_share.pdfIn PDF document text
    • https://cdn.sqhk.co/kapipota/jhLrjla/pinkfong_baby_shark_costume_for_toddler.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mogedozara/belladonna_of_sadness_soundtrack.pdfIn PDF document text
    • https://0f939073-77d1-4307-aaa8-42539c8515e3.filesusr.com/ugd/85c9df_99e1bc822aee40d59a029dbfb302faa9.pdf?index=trueIn PDF document text
    • http://vizepojuduw.rf.gd/7439537198.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/dell_precision_m6800_i7-4810mq_specs.pdfIn PDF document text
    • http://bupujipa.epizy.com/mijaxetavewitotajuj.pdfIn PDF document text
    • https://s3.amazonaws.com/safenalavojuwu/sewalefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20092ac8-f852-4a95-b0c3-9b0e76960197/7524784596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16a32a83-99f4-4bb1-90c2-ae8917721a3e/atomic_physics_books.pdfIn PDF document text
    • https://c9ecad83-e70d-4e71-84d8-0086c45344aa.filesusr.com/ugd/01a317_609cf30c6fe54d54a38e9569b6ab0991.pdf?index=trueIn PDF document text
    • http://fidikaxano.myartsonline.com/nunademukawelixaxupe.pdfIn PDF document text
    • https://ef4f51cf-aae9-439d-85d5-db2134c8a05d.filesusr.com/ugd/8a9083_0e05e94d32424d6c8a11db6bdda16446.pdf?index=trueIn PDF document text
    • https://584abdf6-e408-48d3-a53c-4313a8f82471.filesusr.com/ugd/18ee90_ce551241743e48ab8e321f468c6c308c.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

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_off000114cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114CD 5644 bytes
SHA-256: d474ac2aaa520de95efb77605b4a2fb08a856dfdae186154f2da69d869330ee4
font_01_sfnt_off00012806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12806 12664 bytes
SHA-256: 91d654050d18f6975cc311961a0beb10b8216f6b014e5fd01ef53bcb3d6562ea

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