Malicious PDF — malware analysis report

Static analysis result for SHA-256 0081c8cb9401f6c9…

MALICIOUS

PDF

70.7 KB Created: 2020-12-23 12:50:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 8fa07379ab31156b0ddf98e77107bdd9 SHA-1: ea057fd44b2f913900c1e5618931400eb2a2db35 SHA-256: 0081c8cb9401f6c9d51fd256becb0e89335daebd57dc219276cb74a9a597639d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI is a primary indicator of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafftec.ru/strik?utm_term=equalizer+sway+control+hitch+installation PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f87367999f19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472763/normal_5fd3a81d20594.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f9b34cab31cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f9993cd97c98.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/bf9fed63-e799-4800-b183-cc60e2b8df44/the_concierge_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cdfd47d-7967-45ff-b740-ae39a6932340/84648878401.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/the_recipe_critic_sheet_pan_cashew_chicken.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a7daf3d-4453-4510-8329-0c8b4d7314fe/electrical_motor_controls_for_integrated_systems_workbook_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a9c48d3-5650-4175-be3b-4c021bf19922/7818068145.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc52afb-2ee7-4ea8-a8d6-52607d2c0df4/arya_movie_songs_naa_songs_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/paliberoxiwufa.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/jafitanijuritifobi.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/worksheet_of_future_perfect_tense.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/journey_to_the_center_of_the_earth_book_oxford.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/vikamokaxire.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/andragogy_vs_pedagogy.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/tv_shqip_live_a1_report.pdfIn PDF document text
    • https://s3.amazonaws.com/lirivugu/soxapefuwis.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/irda_guidelines_for_life_insurance_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/23664332687.pdfIn PDF document text
    • https://s3.amazonaws.com/lurutopobi/asco_guidelines_prostate_cancer_active_surveillance.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/cs_to_s_conversion.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_off0000d7ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AE 5216 bytes
SHA-256: 27ef677d7c5063abf693c3d4216cee8ff4876e8cedbc05765931e38b6e7720fc
font_01_sfnt_off0000e986.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE986 9952 bytes
SHA-256: 7560b0b6b071803f48eae97c096812fa5ed138c0eb8bc61e2f7f06e6fa032372

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