Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44cfc96fe80eea2…

MALICIOUS

PDF

67.2 KB Created: 2021-03-08 12:09:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: fdbd72b9fe33aad9b54ee426c4b04db4 SHA-1: 5ed2839b5c226fe05e0864622a26bfe0cd3e76bc SHA-256: e44cfc96fe80eea290303e8499c71b31b2ed71060e4c1661b881c4d11967232a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with one prominent URL suggesting a search result lure for a PDF download. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it might be a generated document intended to appear as a search result or download link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/wix?keyword=the+golden+compass+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408853/normal_6025ce95ab57f.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/kmsauto_net_windows_7_activatorlx0gh.pdfIn PDF document text
    • http://creditscoreusa.info/459857477844jf2q.pdfIn PDF document text
    • https://cdn.sqhk.co/burajugi/iITieC4/sniper_elite_zombie_army_2_console_commands.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/fhj0sig/kofexigulafokorixani.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452217/normal_600864fe8508d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459028/normal_5fc5db88efdf5.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/h2jfXPo/compound_bow_archery_for_beginners.pdfIn PDF document text
    • http://creamwalls.space/is_cakewalk_sonar_still_availablelthtq.pdfIn PDF document text
    • http://cmbmarketing.agency/elements_of_cellular_radio_system_designazt0w.pdfIn PDF document text
    • https://cdn.sqhk.co/pelonulu/gjJjdgg/45283822015.pdfIn PDF document text
    • http://lilozekakotelup.sportsontheweb.net/52490161203.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448339/normal_600f17de8ebe8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468270/normal_5fd8d154d1efa.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/sofezinexalagu.pdfIn PDF document text
    • http://tevaruv.sportsontheweb.net/5199818004.pdfIn PDF document text
    • https://cdn.sqhk.co/givesaxi/gcichyD/lesopamulodaxemimesaxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/a93f18d8-1f25-44c1-be18-c660430486db/nudepuxewepumapozetam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85ffcba6-a0f0-4b9b-a75a-ef6560d46900/18461433326.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_off0000c9fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FB 5512 bytes
SHA-256: 3c95725d1c1239c605b5b3a8651d453f7cf94bbd3550bf2d55bb3bf961a9158d
font_01_sfnt_off0000dcac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAC 10316 bytes
SHA-256: e38bcc3d4ee94424e7831453ec88402a466e4b5eff29e322547609f78df5b05b

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