Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e1976eaf274e43…

MALICIOUS

PDF

69.8 KB Created: 2020-11-22 04:42:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9f72cd24ba2ba393fb48dbd143fd2b74 SHA-1: 3fd518a2d013ce4eecc65a8e58d9e8ef04de42cf SHA-256: 17e1976eaf274e4367b8875694a03c0d3aab90f777b5373599f9ffab0dcbbfa8
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, which is likely intended to lead the user to download further malware or engage in phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is presented as a download for 'Perry's chemical engineering handbook pdf download', a common lure for phishing or malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffking.ru/123?utm_term=perry%2527s+chemical+engineering+handbook+pdf+download In PDF document text
    • https://vezupololepabuk.weebly.com/uploads/1/3/4/6/134600483/runowaxexokab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371498/normal_5fa56fd0815cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454988/normal_5fb98c09a9a1f.pdfIn PDF document text
    • https://bilewobadazape.weebly.com/uploads/1/3/2/6/132695578/novenebegejowiz_guzovaduluji.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/dekojafijezukagupov.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/6fca3e02-da27-42e8-b0cf-251aaf80d400/migurinizovowegofinilawoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62e9917e-5e40-4f3a-a560-a8ba74172c8b/80551598909.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/22723048510.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7bf21d-9da3-4eee-8f5b-68fa30b351d4/75093726675.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/cengage_mindtap_finance_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rexogeguxosix/70793870579.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6EB 6004 bytes
SHA-256: 18d485331a57bc73d9b408edfd6f6da6339b902c3e7b2b7bd96f5e3644a4a61f
font_01_sfnt_off0000cb41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB41 1592 bytes
SHA-256: 3a91dab0430f10a8085c867136d39e07b5d74bc0754d2710a47c7589dcb3de5d
font_02_sfnt_off0000d35e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35E 9672 bytes
SHA-256: 297f49816372db5964857b44fdd29258016d5945ad206446d00bf9eb4f813ff8
font_03_sfnt_off0000f4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4AE 16120 bytes
SHA-256: 0962032be0b5ede07ff0cbc50268fe8301e727644659c5baf7830278d6402380

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