Malicious PDF — malware analysis report

Static analysis result for SHA-256 9afb1704ff9bd32e…

MALICIOUS

PDF

69.4 KB Created: 2020-12-21 10:12:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 57daaea6c1b23a62008f5db30b4fcd66 SHA-1: 7eb391ea15ad4962e318583e5592fcaded253c64 SHA-256: 9afb1704ff9bd32e8633a9aac3a51908b3de6c4a2af265829893995d1ce2640c
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by a machine learning classifier and ClamAV, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user. The document body, though heavily obfuscated, suggests a lure related to games or applications, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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=perfect+barber+shop+hair+salon+games+3d PDF link annotation
    • https://guvebado.weebly.com/uploads/1/3/4/6/134659777/fedujibubikunizixibo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485926/normal_5fb684611199c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482189/normal_5fb85b20e5545.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/44In macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0f2be8f-5126-48fa-8071-2a47b8873451/ropimutefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/414893fd-0ad2-4ff3-9aa6-0c9f795d47e0/sipetinemonaverupufupemol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c1a486-7ee5-4d08-a57d-01dcbbd5fb93/gitakozedosoj.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/girop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eaf46f4-da6a-421a-8e3f-4f742e870b77/curly_bob_wig_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38e111a9-19d2-4f1e-8c02-191130b9f581/25073409819.pdfIn macro / runtime command snippet
    • https://uploads.strikinglycdn.com/files/074490ea-cdf6-4d51-b680-30968b62c6af/westwood_youth_soccer.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fde7c6a297e1070131a54d5/t/5fdea1172629b066abbbac35/1608425753045/25742081866.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/cal_tpa_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a405027b-b514-42cc-a08c-c3ec65a67866/noragimawigosidajasifef.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4e0cccd1e280355eda5a3/t/5fc5cccef81c9a2a0c6c96ec/1606798544636/63256556954.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_off0000d0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0F4 5872 bytes
SHA-256: b18b5897ac9688eba30535a6b7b047fa83e5ee402228152a8bf5d9cb9de0c272
font_01_sfnt_off0000e4c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C3 10488 bytes
SHA-256: 35537037b0dce2579a0db6e58c53bc77ef3af1e7dea6cd32a3bbe11eb169c487

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