Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa02768f5eac61ef…

MALICIOUS

PDF

70.9 KB Created: 2020-11-23 20:42:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 3f23bcc3b6959223732ff255dfba3518 SHA-1: 11ef258ac2e315eda9c17cca60a3f2a84458497d SHA-256: fa02768f5eac61ef666d56c31f334bf51061e58a1d62273fe3fd93c13eab2934
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector infrastructure, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, 'https://ggtraff.ru/strik?utm_term=fire+emblem+fates+skill+inheritance', is likely intended to lead the user to a phishing or malware download site. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=fire+emblem+fates+skill+inheritance In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461767/normal_5fa23120622a2.pdfIn PDF document text
    • https://jatasurow.weebly.com/uploads/1/3/4/3/134358583/3dd54014fb.pdfIn PDF document text
    • https://mefogogid.weebly.com/uploads/1/3/4/6/134600117/bc81af33dd4bff.pdfIn PDF document text
    • https://gujidasudaximuv.weebly.com/uploads/1/3/4/3/134384457/sozof_gegipovupa_vinajawela_fotawigozoz.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/vunidixeviro_xitosujitupile_kadape.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/98957612785.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/72864058648.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/section_1_continental_drift_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/reciclaje_de_basura_inorganica.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/applanation_tonometry.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/vabit.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_off0000d969.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD969 5280 bytes
SHA-256: 5aab20da932ad83048996180b400ddaabdaba79020689029dd5cf259fe828980
font_01_sfnt_off0000eb37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB37 10628 bytes
SHA-256: 75cdf029b07b1582a7b81bcd1cca93346495355395f2fadb94024edae4ff4ffb

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