Malicious PDF — malware analysis report

Static analysis result for SHA-256 bddc06ddb923afe7…

MALICIOUS

PDF

69.2 KB Created: 2020-11-24 21:32:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 6036f0053a4c0c32bf23af7ea0380cd3 SHA-1: b30bbabf79670d359973e12dd0c1f4312f202ce6 SHA-256: bddc06ddb923afe787e4984c18399ae411a1d213bdeb114400daceda70563a41
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffset.ru', which is likely used to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a service manual, consistent with phishing or social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/123?utm_term=acer+aspire+one+zg5+service+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388825/normal_5f9397ae31b4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408991/normal_5f9521ea799c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408485/normal_5f96a615681af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366398/normal_5f8749f24d958.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493602/normal_5fb2938a9011c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390373/normal_5fa0fd1e7fd56.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb1f11c2-11c6-4f8a-80e5-86148d7f1963/55943285768.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8f319fe-8f57-4e7d-b683-5756fc48da95/29752416655.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/vivamulalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d72887a9-dd20-439a-b584-9cbb152c79e4/23891882582.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/honeywell_mm14chcs_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c324f30c-a31b-428a-bc76-129188d1e9ce/odyssey_of_the_mind_pin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d7cd7b8-0f03-40a1-97e7-a07803583c7a/berchtesgaden_national_park_hiking_trails.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72aabe4c-a7f7-4c79-8be9-af6b16395c2a/15146551930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c382017e-55f4-48f3-983e-8f69dbdc6279/98400697603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67392b17-a3b0-4e78-b099-7e72a866095c/canned_banana_peppers_like_subway.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb38bf0e-cf76-4c47-af4f-adee93cb16fd/sonazumimifedafajiwuwe.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_off0000cf87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF87 5696 bytes
SHA-256: 1c956d182bda8284170e896ec1a7422f72744ae2dfebb10bdcf303c123ba574e
font_01_sfnt_off0000e2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F3 10772 bytes
SHA-256: 9741aef7fd91a02037ad77ea0142e61896730dab2e173c15ea20c7f6452de56b

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