Malicious PDF — malware analysis report

Static analysis result for SHA-256 93c98d956282676b…

MALICIOUS

PDF

67.8 KB Created: 2021-01-18 04:14:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 01019646e483ecee07de1be961bf7212 SHA-1: c75cb52e4689f596575351832862fa6c5ce81c21 SHA-256: 93c98d956282676b3e28a883a6492dfaafaf725b84ad014d00c0386b540e81f9
96 Risk Score

Malware Insights

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

The sample was flagged by a machine learning classifier and ClamAV as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The presence of an embedded URI pointing to 'trafffi.ru' suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and heuristics indicate malicious intent, likely involving the redirection of users to external, potentially harmful, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafffi.ru/123?utm_term=assy+mcgee+gif PDF link annotation
    • https://cdn.sqhk.co/sifolilo/fgjAvij/remix_to_ignition_vine.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/gcY5OAU/youtooz_dream_and_george.pdfIn PDF document text
    • https://site-1228702.mozfiles.com/files/1228702/sales_compensation_agreement_template.pdfIn PDF document text
    • https://site-1166645.mozfiles.com/files/1166645/final_fantasy_iv_gba_rom_espanol.pdfIn PDF document text
    • https://cdn.sqhk.co/menigopas/EiihjjQ/75402121310.pdfIn PDF document text
    • https://cdn.sqhk.co/puvubuzu/eia1icO/22371492004.pdfIn PDF document text
    • https://site-1168018.mozfiles.com/files/1168018/mgvcl_electricity_bill_check_gujarat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kijijaxozaro.epizy.com/exclamatory_sentences_examples_with_answers.pdfIn PDF document text
    • http://monawob.epizy.com/suxozemifemu.pdfIn PDF document text
    • http://xuwugufufokiti.epizy.com/80485952416.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_off0000cba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA9 4956 bytes
SHA-256: d4a8aea439bf849e930a07d291eb709a1c012fa1d6e106bc5d2da51b668b3b51
font_01_sfnt_off0000dc90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC90 11272 bytes
SHA-256: bf7a5bd4a3bd6c5e111bf6e0ac1bb014cb3a95b92c5f64e26f97d2f887f6c074