Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e348b4269a3434f…

MALICIOUS

PDF

65.9 KB Created: 2020-11-18 07:56:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a0782c6e1e728f415e8db47bd1ca69d2 SHA-1: b703564ae82d44b483fa3464f89f99d22e4a3924 SHA-256: 2e348b4269a3434f930f305ed63baea934443d2e9cd2ac1c6bc29056f4fc1505
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with one prominent link pointing to a suspicious domain ('trafficel.ru'). ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The presence of embedded links and the overall structure suggest an attempt to redirect users to malicious content, likely for phishing or to download further malware.

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 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.
  • 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://trafficel.ru/aws?utm_term=tenerife+accident+official+report PDF link annotation
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/13b5bbb5ca1225.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f94a06b9e521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f8c94f24a4c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413469/normal_5f96fc17d5efe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_5fada2806c0ea.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/vuliwisuwig/giantslayer_player_s_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/adobe_after_effects_2017_direct.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/ciorba_de_perisoare_jamila.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/kozabapogisevifonojokag.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/madubiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/apa_how_to_cite_a_quote_of_a_quote.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/32583059788.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/diguxafusojefozijotu.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_off0000c76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76F 4920 bytes
SHA-256: 808229fba465de2a47c6f3f991c61997ef132227c05da419f58b124d95214922
font_01_sfnt_off0000d83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83A 10116 bytes
SHA-256: 859c6b4e3f47a800cb6f1881ac5196062d90c9f9b218b684d8322ac3a53b347a

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