Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4318a7c84e11a2c…

MALICIOUS

PDF

69.3 KB Created: 2020-12-18 03:03:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2d51b52e6ae6654c84de3ee941fdcaca SHA-1: 98c38f66f798189dbb55b9ab5cd96fd1b267f170 SHA-256: d4318a7c84e11a2cdf0cdebbfe9c74d47b9eebe341bc94a8df336d5e7de6683e
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://trafficel.ru/strik?utm_term=chrome+hearts+jewelry+selfridges PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426261/normal_5fb421733f48e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fca26163e023.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5f9f6b9c6cf4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417519/normal_5fc12439f2757.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379719/normal_5f939057dc9d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373008/normal_5f8d71c71b017.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/bagawatidaluwakuz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6c07203f04e270fdff5bc/t/5fd6056396ed101a3e3619a0/1607861604598/performance_vehicle_dynamics.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b4fb104edf1d778c99fd/t/5fd046f506d21916ed687409/1607485175455/matte_white_long_coffin_nails.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5740abdb33045eee0e015/t/5fceebaa7379aa35976aa0dd/1607396266809/doromomosujizif.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/49129777677.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/visa_application_form_to_enter_japan.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_off0000cf08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF08 5496 bytes
SHA-256: 64d456ee99168dde59f92682c2029b89ff1f29ecb5bc1976fc7ca77176a3a3e8
font_01_sfnt_off0000e1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A2 11516 bytes
SHA-256: 0d5a8413fbb9ac9bbc50e447e9b32df2737bade2034626e57cb3bb5ddabba9d0

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