Malicious PDF — malware analysis report

Static analysis result for SHA-256 446ee09e46970d2c…

MALICIOUS

PDF

63.7 KB Created: 2020-11-25 06:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 5b1412ac44f1a040a196416beb832ad2 SHA-1: ef836eeb0394dda33382d5593b97365b30cef5a8 SHA-256: 446ee09e46970d2c06160d89afaa3ac4869c05a451293e464eaa7b28c7820d6d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ggtraff.ru/123?utm_term=cherokee+inc.+is+a+merchandiser+that+provided+the+following+information+13+000 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374685/normal_5fa222c0ab156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386848/normal_5fa1ef6a28801.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455198/normal_5fa8ab250a749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405950/normal_5f9e4c087c98c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368246/normal_5f99486c8723d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455898/normal_5fa19a68521c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369496/normal_5f88c24e1662a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369143/normal_5faf59e4a7b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384299/normal_5fa9121c90b83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368747/normal_5f8f3d685301c.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/vexosafugunu/10775398866.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/fire_on_the_river_sauk_city_wi.pdfIn PDF document text
    • https://s3.amazonaws.com/befevifa/oxford_advanced_learner_s_dictionary_premium_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/vapowedulemozenanunufeze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce60a51b-fb78-4669-ac42-11c98a33d5fa/vufobetuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45b5602d-dc67-4958-aa2d-f023dc40d3f7/61579628906.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_off0000ad19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAD19 5988 bytes
SHA-256: 9daa8d6a4bcb7f03d6364013ea95dd543cdd3ac26b3fd0cb343822701cdfa547
font_01_sfnt_off0000c171.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC171 9780 bytes
SHA-256: 8baab1a8fb268ad3f7e262e854b4b33ae9c241cd4fb00b7ab70a9ad57ece276c
font_02_sfnt_off0000e2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C7 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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