Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9ec70cc04069ffd…

MALICIOUS

PDF

85.9 KB Created: 2021-04-30 09:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d1bf0fcedfb1752bbc76c27f807e315f SHA-1: 9dd8fd462b87f47b9af4149cb5eaf2814ecdc700 SHA-256: e9ec70cc04069ffdb0cd2ff5a1e8aa8d34e54e07cdcca0226f706f89af3c172c
126 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 URIs, with a high-confidence ML classifier and ClamAV detection indicating malicious intent. The document body, though partially corrupted, suggests a lure related to HP Pavilion dv6 drivers, directing users to a URL that likely hosts a malicious payload. The presence of multiple disposable hosting domains and link farms further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/strik?utm_term=hp+pavilion+dv6+drivers+windows+10 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446924/normal_6036b55803814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477921/normal_603919321c893.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417032/normal_5ff33739b7b9d.pdfIn PDF document text
    • https://dapobatajixafaw.weebly.com/uploads/1/3/4/3/134310280/pekakobuw.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/2vjc2ri/nora_fatehi_songs_download_mp3_bestwap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419193/normal_6034041c68adf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420760/normal_5fc9acb5b796c.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/3Oq1hcg/human_fall_flat_thermal_trophy_guide.pdfIn PDF document text
    • https://bexoxofimimiwox.weebly.com/uploads/1/3/0/7/130775405/xuzez-kuboro-maguz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450747/normal_603187a821f2c.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/5OtgfzZ/41442980874.pdfIn PDF document text
    • http://vesoduwurev.iblogger.org/18345067278.pdfIn PDF document text
    • https://fibunijir.weebly.com/uploads/1/3/0/7/130740490/4870164.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5fc8abc965de2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mimiwuzoxul.epizy.com/anstoss_2_verlngerung.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/wegagamik.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/biography_vs_autobiography_worksheets.pdfIn PDF document text
    • http://jefesuzi.epizy.com/74618997886.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/38346714934.pdfIn PDF document text
    • http://tebaxisabajix.rf.gd/pathfinder_2e_character_sheet_pack.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/sewutoperuzer.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103B4 5124 bytes
SHA-256: b9b35c5d60ccf976ad71a730cd8b4a728c923c90b258938fbad547ffe49dca0d
font_01_sfnt_off00011529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11529 11600 bytes
SHA-256: e45909f604a4381143af2122222af048dbae0fd088e4237fb3b53f09bdcfc707
font_02_sfnt_off00013c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C29 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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