Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ab4eb39af4e6129…

MALICIOUS

PDF

83.2 KB Created: 2021-01-08 16:43:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 003c0db426952d3555368a3306f7b764 SHA-1: 356f81f8fa6ed7e8d9a303ee378a49c5300a8273 SHA-256: 9ab4eb39af4e6129234d2aaee8804db2568b923e650725eee65ed10388f90f30
96 Risk Score

Malware Insights

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

The PDF file 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. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/aws?utm_term=dna+extraction+lab+report+discussion PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4402517/normal_5f963201a40fd.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/fopalew/animal_crossing_toy_day_villager_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/decorated_sheet_cakes_for_birthday.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/xifajebexegotoxavas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b489fffd-9d03-46af-b992-f45d5cb1a738/7283934251.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/ancestors_the_humankind_odyssey_neuronal_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/albinismo_forma_de_herencia.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/arizona_diet_green_tea.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/20402404420.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78591aa1-584e-43c4-926a-12adc19a55a2/38390082743.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/herblore_guide_osrs_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa3c18f8-6adb-4db1-8bfb-802e4320d355/drag_racing_events_this_weekend_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/economics_new_classical_versus_neoclassical_frameworks.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/bopoxerutoralix.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_off0000f6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E0 5156 bytes
SHA-256: 118386b146709511615b60a4338be6b5082a594d9e4dfa1ea62925032598d51b
font_01_sfnt_off00010869.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10869 12140 bytes
SHA-256: b3a147a7d423010ed6cadbeec0b610ad3ba1c8ecf329a657aba8e669cd3ecd72
font_02_sfnt_off00012fc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FC6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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