Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de6410658d0c7c4…

MALICIOUS

PDF

71.1 KB Created: 2020-11-25 07:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 6e43bcaf8a14502ed4126eaf05f57dbc SHA-1: 92dfd909b36f92a380c46bdbd6ab9334e893826a SHA-256: 3de6410658d0c7c48d15304aacd2b2e3aa698543141e12fd033f6f660fbb4e60
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 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/strik?utm_term=leblanc+guide+mobafire In 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/af613a37-3de7-4e99-95a6-2f6a5e641931/breville_800esxl_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/winitapo.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/23666879564.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b34eec95-5d8a-4e6a-9162-218bdde1ab46/jamek.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/33360282866.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/vuvikisawujimusijowigani.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/causes_of_the_american_revolution_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/biwuwukesazef/religion_and_medicine.pdfIn PDF document text
    • https://s3.amazonaws.com/welutizenop/30321642778.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/du_b._ed_entrance_exam_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/26499497735.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/words_for_avoidance.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1A 5244 bytes
SHA-256: b850e613f6e645c14a1b3478e8aa217dba2017d6be8f85cb44a96b9d1836c5ff
font_01_sfnt_off0000ebdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDD 10544 bytes
SHA-256: f1153b1de2f795d5fdeffec0d970e1863de287770e2adaf7560364dfdc137639

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