Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12e5bd2e0803590…

MALICIOUS

PDF

61.1 KB Created: 2020-11-16 16:54:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 44d9fcd4b8dce6e0ac6312d9da3b6545 SHA-1: dff4d66f4c4445afc805e805ac87661396b45a9d SHA-256: b12e5bd2e080359062fb66a89e1be36e3fa3385bfa207284704f21ab201fad7a
96 Risk Score

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 0.9996

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=4runner+running+boards+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371800/normal_5f8e9c8562044.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/124c3592-3c06-48f0-b5a3-517a9a6f3e54/98855681968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e41acc-7368-414c-beb3-0c167120c5a7/98448315156.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cff52765-f1bd-4379-a911-e9acc24637eb/musicatono.com_descargar_musica_grat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3da15cd-e6dd-448c-979e-a73b3eefa415/bufifog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ff1d2c3-9323-4cb3-b765-8a1d1d378318/the_beggar_s_opera.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/character_autopsy_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ade70336-9b06-4a3b-a8b1-f8b3884829c6/dipsy_hat_teletubbies.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/53177176109.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/hydro_mousse_liquid_lawn_home_depot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/418f8976-85e0-43bf-a072-63afb33d2a09/fern_charlottes_web_halloween_costume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a76d004d-af9a-4f75-886c-ffda8bf4ea92/14828767878.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/22895062704.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/mobukafifufuregu.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_off0000b2c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2C8 5368 bytes
SHA-256: a588da896915ba7faa64cc865aada25c30f25c97ecb447632eebc8faced74bf1
font_01_sfnt_off0000c516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC516 10076 bytes
SHA-256: f9570c534f005006b41f50a80669052e3fc5765feacdbc539c852a196f63f883