Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce565878833c310…

MALICIOUS

PDF

67.3 KB Created: 2021-03-07 20:25:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: aa5e3babec248a4fec51774898e7e112 SHA-1: 4bde62a83fd4ae22b78598065a03a3f888ca73dd SHA-256: 0ce565878833c3107c65fa93c32d2b748ceb94baf3a992334b2f3dab94529c78
184 Risk Score

Malware Insights

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

This PDF file contains numerous links, with at least two pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure related to 'Heat n glo parts near me', suggesting a phishing or scam attempt. The presence of multiple links on disposable hosting further supports a malicious intent to redirect users to potentially harmful sites.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=heat+n+glo+parts+near+me In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408176/normal_5fe90f0cf2f6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5fcce272cd62e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491159/normal_601450e6322f8.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/gih8Bjg/encyclopedia_brown_book_14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367940/normal_5fef386102de1.pdfIn PDF document text
    • https://cdn.sqhk.co/lagexodefajo/5ijBjiG/hair_fashion_2020_fall.pdfIn PDF document text
    • http://itfamily.pro/best_life_simulation_games_ios_2019gggld.pdfIn PDF document text
    • http://energytik.net/bengal_tiger_movie_tamil_dubbedos3c5.pdfIn PDF document text
    • https://cdn.sqhk.co/nilulugaj/aEzxji2/valogizibuwaduvidalusife.pdfIn PDF document text
    • http://rubka.space/cognitive_approach_to_language_learningyq5o3.pdfIn PDF document text
    • http://lazadacostumercenter.com/hollywood_reporter_most_trusted_news_anchorsrxvsl.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/ZYcyiif/steve_jobs_last_apple_event.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/7hdjgie/ducks_unlimited_credit_card.pdfIn PDF document text
    • http://mifilud.iblogger.org/sample_biopsychosocial_assessment_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490524/normal_5feea9454df15.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sozejegisiwex.epizy.com/batuxefuxusegakoxi.pdfIn PDF document text
    • http://bikufupok.rf.gd/51406638595.pdfIn PDF document text
    • http://rukinozo.epizy.com/62586561915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d41748d-4ef4-4673-8dd6-6a1e4f20f238/ps_vita_emulator_mobile_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3c11e02-a6be-49ca-a513-2ab949edb82f/38310131646.pdfIn PDF document text
    • http://wewonak.rf.gd/brachial_plexus_block_ultrasound_guided.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/470affcf-c96b-43bb-aecc-9ed9f6b73fff/do_netherland_dwarf_rabbits_change_colour.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_off0000cb3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB3A 5100 bytes
SHA-256: a1908d6c4e6f50e12f3678040094ef758310fbe28b3a686c4fb44d77a0f4e1c1
font_01_sfnt_off0000dc7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC7D 10392 bytes
SHA-256: d799f1952a66ad02a0375863dc163d40e225335255b2a352bb51380a812ba92b

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