Malicious PDF — malware analysis report

Static analysis result for SHA-256 289496c4bd660ea9…

MALICIOUS

PDF

120.5 KB Created: 2020-12-28 03:56:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cf6888ae168d6f70c4bbe1577dbd6aba SHA-1: 73d19fe889f3f037df98654d0ee3698151cc2f72 SHA-256: 289496c4bd660ea929487a40e75c7be95e80b62a8b470ed647b2c86de2a6dd72
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving as a lure for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious 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=god+the+mother+church+texas PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380694/normal_5fe938301ee4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488604/normal_5fd91708a7a27.pdfIn PDF document text
    • https://cdn.sqhk.co/fedelubu/kQibelQ/13398805545.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/ih2HUja/u_mobile_centre_mersing.pdfIn PDF document text
    • https://cdn.sqhk.co/fovuxugo/tyhbBij/fomamosuf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378830/normal_5fddbb6825640.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/70471011868.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/188908388.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/kaalai_vanakkam_image.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/gagewesipuluvizus.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/92378091268.pdfIn PDF document text
    • https://s3.amazonaws.com/leteraxewe/59993964111.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/cfop_2017.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B74 20736 bytes
SHA-256: 4a71857547da73af568529684de29d6548a241ff2f3b9d66d2dcc87f48879d3c
font_01_sfnt_off00018ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18CCF 5248 bytes
SHA-256: 6acbcd3fb1dd7c0b813234bed551cf36fa21f546e51a1f880a6c25c38a13439a
font_02_sfnt_off00019e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E6F 6336 bytes
SHA-256: 45ae892d03dfa2c29aa097517f1a2358f56a824b66bb8b56aff5843d2888e05f
font_03_sfnt_off0001ad87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD87 11948 bytes
SHA-256: 6fc237dda57fe6c38bf330b6950971810dd4920d327ddf91209ed18caa532176

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