Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e29a04055e37212…

MALICIOUS

PDF

88.0 KB Created: 2021-03-30 19:17:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: c330b637be98f3f77f3c6810e193052a SHA-1: edc065697c691326c9e27c63a3d117f870d11140 SHA-256: 5e29a04055e37212d484b569d1f508aa4386326166d1bf60a610833975c10648
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains text related to search queries, and the embedded URI points to a URL designed to mimic a search result. This suggests the document is part of a phishing campaign, likely using a spearphishing attachment vector to lure victims to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://resalured.ru/strik?utm_term=how+to+replace+lg+glass+stove+top PDF link annotation
    • https://keboxatoxumire.weebly.com/uploads/1/3/4/5/134591907/83265.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/7ZafuyX/71968943241.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418783/normal_6018a9139db32.pdfIn PDF document text
    • http://nonly.xyz/65542201408vf80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5fd982c3b6939.pdfIn PDF document text
    • https://cdn.sqhk.co/tedubifo/hfIhhtq/author_purpose_examples_of_inform.pdfIn PDF document text
    • https://penuwepilaxol.weebly.com/uploads/1/3/4/7/134756509/7952164.pdfIn PDF document text
    • https://cdn.sqhk.co/guledijuxi/Ohc9rZK/best_free_dating_app_in_usa_2019.pdfIn PDF document text
    • http://hookup673.site/394670241729ubch.pdfIn PDF document text
    • https://cdn.sqhk.co/tamurikubol/oxlhiG3/800_words_series_3_uk_tv.pdfIn PDF document text
    • https://pefeduvoxonix.weebly.com/uploads/1/3/4/0/134017609/badibixotomil.pdfIn PDF document text
    • http://getyourscore.info/mistborn_final_empire_word_count5dooo.pdfIn PDF document text
    • https://kikipaniwuno.weebly.com/uploads/1/3/4/7/134714830/043cb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476927/normal_6045075e1c304.pdfIn PDF document text
    • http://luminar4-download.xyz/fafujewowizn0bsl.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
    • https://s3.amazonaws.com/piradi/vinike.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/nepasitonivot.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/defafotukefewurufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8825e8-dcb4-4988-a933-c8aeebb0b68c/socratic_seminar_note_taking_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8912cbbf-401f-41a4-8ea1-f79a802cba67/lomedidevilinezisit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffad63bb-a46e-421d-a018-5aebe02c2d5a/does_ps3_have_remote_play.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/29557052941.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_off00010fc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC1 4848 bytes
SHA-256: cb5b8588c59ab79d239f26b169a4558ec30277c049e3a2e3a276100cf2e2baec
font_01_sfnt_off00012066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12066 10680 bytes
SHA-256: 6fb581a2ecb8817eda5011b3a3779686c487b7b17df07a6f694c58f0a02a7706
font_02_sfnt_off00014466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14466 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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