Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f4aaabe3d74876…

MALICIOUS

PDF

148.8 KB Created: 2020-11-10 01:21:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ecaed08154e1308da353fe38db4109ed SHA-1: 2b05c380173b4f6187887f0dfebd419728ce9409 SHA-256: e9f4aaabe3d74876bf732e101195158f2dea496fa9762739a045fa5b70645867
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'traffset.ru', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/strik?keyword=low+cost+leadership+of+adroll PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417426/normal_5fa43e3a2d820.pdfIn PDF document text
    • https://xodetawutal.weebly.com/uploads/1/3/0/7/130774968/9812689.pdfIn PDF document text
    • https://zipibolusoxa.weebly.com/uploads/1/3/4/6/134627603/32ba930d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408866/normal_5fa899712b1fa.pdfIn PDF document text
    • https://musiwimo.weebly.com/uploads/1/3/4/3/134359140/jozufabunagufirot.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/4135625.pdfIn PDF document text
    • https://vofutomafete.weebly.com/uploads/1/3/4/4/134463257/petukunixesud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_5fa098f252a70.pdfIn PDF document text
    • https://tasozowi.weebly.com/uploads/1/3/4/3/134315408/gasuwamiboxox.pdfIn PDF document text
    • https://lokixesope.weebly.com/uploads/1/3/1/6/131607163/c313334bff6eb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f87a0a1697a1.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/kitakilesa/befafupipanepeji.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/btd_battles_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tosasugokod/lego_spiderman_games_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/oblivion_guitar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/daddy_good_deeds_tv_show.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/96064168587.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F66D 5276 bytes
SHA-256: ed839718b1c37e54335caa543c7515cee029545ef6e0ca1c1164520c0a7ac32e
font_01_sfnt_off00020872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20872 12060 bytes
SHA-256: 9d70fc823954af9482986aa7de8175bf9c3038e14d23dd4fdc36dd8741482c1f
font_02_sfnt_off00023096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23096 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd

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