Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a0865ac0a0dfa73…

MALICIOUS

PDF

72.0 KB Created: 2021-01-15 22:10:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fc8cc9bad2d987637184cac84c49e277 SHA-1: 07371dadb981fd98d28626d47b05553a11046920 SHA-256: 2a0865ac0a0dfa739037ce10da73a65a447711f486a086d3e037cde3200273c8
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://ggtraff.ru/123?utm_term=can+pregnant+women+eat+shrimp+cocktail, is the primary indicator of this malicious activity. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or redirection attack.

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/123?utm_term=can+pregnant+women+eat+shrimp+cocktail In PDF document text
    • https://geliwesirodired.weebly.com/uploads/1/3/1/3/131382982/6313955.pdfIn PDF document text
    • https://site-1177831.mozfiles.com/files/1177831/42728573158.pdfIn PDF document text
    • https://site-1214984.mozfiles.com/files/1214984/pathogenicity_meaning_in_bengali.pdfIn PDF document text
    • https://fatitabo.weebly.com/uploads/1/3/4/7/134757356/8d6ca91e2f093.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/wexoteluwag/65283579868.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/jiberuzelipemobujos.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/speaking_ielts_topics_2018_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/45948934005.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/wojutoduxavukunub.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/jeevan_mrityu_full_movie_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/zosonadiwinuzugo.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_off0000dd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD57 5408 bytes
SHA-256: 56ff22696f67ea478bbc6a12f25eb61bf0829fbb6c93b0eef5441578c3f8076a
font_01_sfnt_off0000efa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA0 10604 bytes
SHA-256: 620965b23a98df5930e52dd3987512eb67fa588b6f040779b0155b4d808770c7

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