Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0bfd45006b70ee…

MALICIOUS

PDF

98.4 KB Created: 2021-03-11 11:53:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b9ec7a40a7aeafe3bfe54777ef491637 SHA-1: 877eda469ed3a437c2fd62b951c2f571fb454231 SHA-256: 6d0bfd45006b70eea2c1fe7ea28af2c97c07e216cdc531fc7918863b78f45433
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 embedded URLs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious activity, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=arduino+lcd+i2c+example PDF link annotation
    • http://copyright-security-ig.com/are_samsung_6_series_tvs_goodyc0lf.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/iibhaaa/babafizavobafu.pdfIn PDF document text
    • https://bunogijadijis.weebly.com/uploads/1/3/4/8/134896562/cb615391.pdfIn PDF document text
    • https://cdn.sqhk.co/sixitigoxeto/hia242D/how_to_use_polaroid_originals_app.pdfIn PDF document text
    • http://yildirimotobursa.com/rikepelogajnvgh.pdfIn PDF document text
    • http://streamsweets.com/wezadivoxawalezavodusemruzfo.pdfIn PDF document text
    • https://cdn.sqhk.co/zetuzire/mIegjje/volujefuko.pdfIn PDF document text
    • https://xitolomeka.weebly.com/uploads/1/3/4/0/134012462/rasuw.pdfIn PDF document text
    • http://com-connexion.xyz/from_dictatorship_to_democracyw0j7j.pdfIn PDF document text
    • https://zefopezonokav.weebly.com/uploads/1/3/1/3/131398054/6125043.pdfIn PDF document text
    • https://foziwumiwogesis.weebly.com/uploads/1/3/5/3/135321673/nusokinokijano.pdfIn PDF document text
    • http://iciapp.xyz/basis_points_in_excel_formatvd4o2.pdfIn PDF document text
    • http://swiss-gear-top.xyz/gafejutoviz4xpnl.pdfIn PDF document text
    • https://waragiteket.weebly.com/uploads/1/3/4/0/134016771/fbaec65b.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwuvume/iijeRRT/cookie_macaron_pop_sweet_match_3_puzzle.pdfIn PDF document text
    • http://eurostore.info/pete_the_cat_and_the_missing_cupcakes_guided_reading_levelqi2i2.pdfIn PDF document text
    • https://vuzabevewipa.weebly.com/uploads/1/3/6/0/136087677/tetukasanaberan.pdfIn PDF document text
    • http://hermidkovo.info/zentangle_art_ideasuhlkn.pdfIn PDF document text
    • https://lokawinopigu.weebly.com/uploads/1/3/2/7/132712062/reledoboden_wenowu.pdfIn PDF document text
    • http://mavito.online/39760665545wlhne.pdfIn PDF document text
    • http://www.electronoobs.com/eng_arduino_tut51.phpIn 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/3ce84e70-b303-45e4-a1a4-48d7a4ac3715/vocabulary_workshop_level_blue_teacher_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec97ce8e-d0a6-49cc-b441-5cabf432e282/will_there_be_a_5th_twilight_book.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_off00013f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F57 5228 bytes
SHA-256: fb38646cd880e05184b709a90193e670c64f70ac2726ee6af4473872363420bc
font_01_sfnt_off0001510f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1510F 13328 bytes
SHA-256: 902f253c7034661d34baeef28ecda7430349273588ce25ab4cf6c2b634699643

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