Malicious PDF — malware analysis report

Static analysis result for SHA-256 17fc9a0f95c6deac…

MALICIOUS

PDF

78.6 KB Created: 2020-12-25 19:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5024155aa8758e825c93ada341cb9dba SHA-1: 933e60c5a65465c79c1ecd23e873b076f2e8c62f SHA-256: 17fc9a0f95c6deaceb8e5c034d3417174f5a3dbc8b10d4744cc5092ffc99f05e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=alcatel+lucent+g-+240w-+b+firmware'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://gettraff.ru/aws?utm_term=alcatel+lucent+g-+240w-+b+firmware In PDF document text
    • https://romovemesokawaj.weebly.com/uploads/1/3/4/4/134479736/rinepasadizedir-xofimo-jefivedux.pdfIn PDF document text
    • https://rapexinet.weebly.com/uploads/1/3/4/3/134328854/e133b7265603.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423136/normal_5fa26ea3423c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_5fd1f11722edf.pdfIn PDF document text
    • https://cdn.sqhk.co/xezojutatow/tphhYgi/zejazojirifuj.pdfIn PDF document text
    • https://pafokosunokiv.weebly.com/uploads/1/3/4/8/134860442/gibiz_jozusagetevik_ruzun.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/jisjbUz/64112177226.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/a2e9afa0-948f-4191-ac37-e7f8cf057d41/77176003884.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/fapazuvepudedisixafije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddcf6319-9bea-4559-8ce9-017a351c8157/40565945401.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD089 5636 bytes
SHA-256: d69f53e77374596b125c84a4ad57135283f7159640c23840b5e96d9a9c0d55a7
font_01_sfnt_off0000e3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3CC 10384 bytes
SHA-256: 314907744e08ea8788d2ac3351d1143246d2d9211c05921e64c7ec940f5e41d6
font_02_sfnt_off0001078b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1078B 22084 bytes
SHA-256: 1106a4af476b8ae72637ff53dca5b3225257338a55eeac874d3e3d9445f46304

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