Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80bde6e0371f87e…

MALICIOUS

PDF

77.5 KB Created: 2020-12-18 06:11:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 694ae3cd81787b8190974e81a2e2b8d2 SHA-1: de96e1d71ff69eec9d80901fcb4e296244b13117 SHA-256: c80bde6e0371f87e9fbb3e66b7561a601046b53545ab211b8046ddcb8c26ecb2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/strik?utm_term=log+log+graph+paper+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4373502/normal_5f97fd4f4219d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465537/normal_5fd8228b92357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388422/normal_5faa7d79b9b25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_5fda7f47645c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373768/normal_5f90b63f21d35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369316/normal_5f8a4fec32cbd.pdfIn PDF document text
    • http://customgraph.comIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sumesawoxajew/pillars_of_eternity_2_deadfire_portraits.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/army_injury_prevention_through_leadership_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aab6246e-8db3-4902-a314-0d5f6e8b5fd1/escape_the_bathroom_walkthrough_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b38af0c-a985-4ced-90f9-c99b7bb8d14b/tavunu.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/rezagefujixarawisaxixas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/247f9a20-faa9-48fb-944c-2cd1f2ea33c5/8th_step_inventory_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/gulaseduneniromivig.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/bose_700_manual.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_off0000f1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D8 4844 bytes
SHA-256: 63be2d3466b3299bdfcf8877982e71d3af41843901e902fa51c4198acd4132ae
font_01_sfnt_off00010254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10254 11348 bytes
SHA-256: c9d2a745a97787747f6f1958ae0a7734159d5a9addd0f1d29098dd6a55fce341

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