Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e1d9ccb0d7f71ee…

MALICIOUS

PDF

125.7 KB Created: 2020-12-24 21:42:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 160553e129a40fd90e485cfbc9169c25 SHA-1: 9e8724e39823a483f1669a876bea3c91aff5b28f SHA-256: 8e1d9ccb0d7f71eef94ff1b28f1ed04f78f372c64970e505c08407bf3b8b4dec
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that redirect to external sites, suggesting a phishing or credential harvesting attempt. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document, likely a spearphishing attachment.

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://trafffe.ru/aws?utm_term=pitcher+plant+information+wikipedia PDF link annotation
    • https://cdn.sqhk.co/fakupavod/fjhjdhc/zotatatabopubefos.pdfIn PDF document text
    • https://cdn.sqhk.co/wiluxuko/heMjdhd/rarivozus.pdfIn PDF document text
    • https://cdn.sqhk.co/rosavuzezig/gggcmib/troll_face_quest_unlucky_level_13.pdfIn PDF document text
    • https://cdn.sqhk.co/nerenina/2b6Q2hd/sejososujegotidogetoroguj.pdfIn PDF document text
    • https://cdn.sqhk.co/vudebalox/hbhcQKf/jio_meet_app_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/weteroliwo/RDJvnRG/run_run_as_fast_as_you_can_shrek.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/najubu/calculus_1_limits_problems_and_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/circular_saw_guide_rail_toolstation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ea14c27-fae2-42bc-8fdc-69354b83d1d5/dojefuvusa.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/wulunotovejeva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8e4ec36-2221-424f-8b04-6761696930e1/gerero.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/wejebilitimubebepaxeda.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_off0001afa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AFA3 5372 bytes
SHA-256: 64d31860781c9423a896cb505af8bd845f863a50b498bd4e49b2c522359178ea
font_01_sfnt_off0001c1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C1D6 12304 bytes
SHA-256: 5ebb215210cc97705a1ee6fbf5c594ebd55abbc85e5fe72df1404ab5f722d7b3