Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b78c5bdc86563ab…

MALICIOUS

PDF

60.5 KB Created: 2020-11-29 13:39:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f54226f039ce1e8f3e4beadd25f4128f SHA-1: 1ebf5e8227b3e0f3bf8aac2687140fa97c233a15 SHA-256: 2b78c5bdc86563abc6ba2c9fcf81b5653be52c62be72d341eb33737bc64b5f2b
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URL, 'https://trafftec.ru/123?utm_term=lac+qui+parle+valley+high+school+291st+avenue+madison+mn', is a primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a potentially harmful site.

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://trafftec.ru/123?utm_term=lac+qui+parle+valley+high+school+291st+avenue+madison+mn
    • https://cdn-cms.f-static.net/uploads/4385415/normal_5f8db2009bcba.pdf
    • https://cdn-cms.f-static.net/uploads/4499635/normal_5fb6620c1ed70.pdf
    • https://cdn-cms.f-static.net/uploads/4420238/normal_5f9fd9d286431.pdf
    • https://cdn-cms.f-static.net/uploads/4466408/normal_5fab01f671107.pdf
    • https://cdn-cms.f-static.net/uploads/4464532/normal_5fc04fb81b7f5.pdf
    • https://cdn-cms.f-static.net/uploads/4417315/normal_5fa615b5a8689.pdf
    • https://cdn-cms.f-static.net/uploads/4405443/normal_5faeab2f6efa5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0f2837cd-0bcd-47ea-a977-0526aec5075d/simbologia_instalaciones_hidraulicas.pdf
    • https://s3.amazonaws.com/pewibim/54093328852.pdf
    • https://s3.amazonaws.com/juliziwojatige/small_unit_tactics_manual.pdf
    • https://uploads.strikinglycdn.com/files/0390d760-2b0e-4487-a6de-de40362ece7f/9950937475.pdf
    • https://uploads.strikinglycdn.com/files/8e6aeac1-666f-4fb3-94d4-4ad8b65d383d/30585730733.pdf
    • https://uploads.strikinglycdn.com/files/deea2087-599b-443a-adeb-48bf246df772/kugesew.pdf
    • https://s3.amazonaws.com/jedadokuti/28052200198.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000abd5.bin
df03add237ec1fb3d56d24ba289c94839cd79a569aaa343c72ef9fe6731dbdc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABD5 6056 bytes
font_01_sfnt_off0000c055.bin
8e3c6cbb8e90c5c98c3ee9851c80f1c42b6b0b1bc4863b9dae3e82582b61b5ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC055 11192 bytes

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