Malicious PDF — malware analysis report

Static analysis result for SHA-256 d95396e16a2ea8ff…

MALICIOUS

PDF

76.9 KB Created: 2021-02-28 23:33:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1f0b04f6b122f4a5724335e416ac7d8a SHA-1: acb949b57afb006f2bc7e49074b58ea7f7fb2f53 SHA-256: d95396e16a2ea8ff5e86a46709b87e321d71f73d74adc9b6f5247d430efb4758
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified as a link farm on disposable hosting. ClamAV detected this file as Pdf.Phishing.Trojan, and an ML classifier also flagged it as malicious. The document body, though partially corrupted, suggests a lure related to a book title, likely to trick users into visiting the malicious URL.

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://resalured.ru/wix?keyword=veinte+mil+leguas+de+viaje+submarino+libro+completo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4493569/normal_6007db841dda9.pdfIn PDF document text
    • https://sobuxiba.weebly.com/uploads/1/3/4/8/134867950/6543862.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/5683186953.pdfIn PDF document text
    • http://sinoniwim.22web.org/destiny_2_shadowkeep_power_level_guide.pdfIn PDF document text
    • https://zebonusifok.weebly.com/uploads/1/3/4/5/134509505/gugajugizavalan.pdfIn PDF document text
    • https://zuranuwazob.weebly.com/uploads/1/3/5/3/135332575/6794266.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461216/normal_5fdd88652d3a3.pdfIn PDF document text
    • https://sawotulexude.weebly.com/uploads/1/3/5/2/135298589/mozuk.pdfIn PDF document text
    • https://fopalese.weebly.com/uploads/1/3/5/3/135349797/tidifegupavuvozawow.pdfIn PDF document text
    • https://tipozuroboga.weebly.com/uploads/1/3/4/2/134265922/3705972.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/rizoli/android_studio_emulator_amd.pdfIn PDF document text
    • http://xikebivulusures.rf.gd/blank_warranty_deed_form_georgia.pdfIn PDF document text
    • http://wemiwapava.epizy.com/battlefield_1942_free_legal.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/vagud.pdfIn PDF document text
    • http://mukanebesiva.atwebpages.com/sales_manager_job_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/chuyn_file_nh_sang_word_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/english_grammar_test_advanced_level.pdfIn PDF document text
    • http://makakanow.onlinewebshop.net/mosejibeniwibadapu.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/the_rising_of_the_shield_hero_does_naofumi_and_raphtalia_kiss.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_off0000ec39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC39 5636 bytes
SHA-256: 1d275ec91c5632dd7a60ed7d843a624eef7937f2bd2190bc1daa1f08632f8e95
font_01_sfnt_off0000ff55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF55 11552 bytes
SHA-256: fd85ca28d48e6c8bef7bfdfbe9a15f1bf420638040957aa8a4e8d54f16a78aef

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