Malicious PDF — malware analysis report

Static analysis result for SHA-256 be794d7f2ce5d266…

MALICIOUS

PDF

76.9 KB Created: 2021-01-09 23:39:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e6bebcab5a40eea109fcedbfb2a1a93d SHA-1: b78fae63376a387fcac4101bb0cb7892893301dc SHA-256: be794d7f2ce5d2664dd313db97b6d32755ff1c9fe2a1d920009d71934d9ff7af
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=wildlife+park+3+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4489598/normal_5fefc5754e019.pdfIn PDF document text
    • https://site-1168018.mozfiles.com/files/1168018/mgvcl_electricity_bill_check_gujarat.pdfIn PDF document text
    • https://site-1168038.mozfiles.com/files/1168038/jubamobojexofe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409093/normal_5f961825e3aba.pdfIn PDF document text
    • https://site-1177444.mozfiles.com/files/1177444/dino_hunter_deadly_shores_region_24.pdfIn PDF document text
    • https://site-1168242.mozfiles.com/files/1168242/circle_break_glow_neon_smash_ultimate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kewakuko/ametropias_esfericas.pdfIn PDF document text
    • https://s3.amazonaws.com/zafirawit/negibugexopivonarug.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/64356871948.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/vuzorisun.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/burnaby_rcmp_contact_information.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/89917409827.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE377 4900 bytes
SHA-256: 3192617ea707aa02f597060e47e22005058e9b7597bf82c92ef6be361889df7e
font_01_sfnt_off0000f440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF440 10552 bytes
SHA-256: 2dd168cf282c4369e664909b8fceeced163459913b0eea17bb4f2e5270a30665
font_02_sfnt_off00011872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11872 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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