Malicious PDF — malware analysis report

Static analysis result for SHA-256 d56ac5f0daf08d2d…

MALICIOUS

PDF

183.7 KB Created: 2020-11-11 23:32:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 946520070b8441043b24931c0a925cef SHA-1: 7943fd17c5cffdcbae91a6f67c758dd2c78fd03c SHA-256: d56ac5f0daf08d2d2244d906eb244adaea761477d185b29dfb51b6e28ad0fb4a
194 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including a critical finding for a link to known malicious redirector infrastructure. The heuristic 'SE_PAYMENT_REDIRECT_LURE' indicates the document's content is designed to trick users into changing payment details. The embedded URL 'https://traffmen.ru/strik?utm_term=npv+ti-+84' is the primary indicator of compromise, likely leading to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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=npv+ti-+84
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/3250b5961ed1.pdf
    • https://cdn-cms.f-static.net/uploads/4366647/normal_5f99e3720d219.pdf
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/b92895a.pdf
    • https://wusoxebuwewete.weebly.com/uploads/1/3/4/4/134432123/tojunojikit_nimugexadusowev_sofur.pdf
    • https://gemiwanot.weebly.com/uploads/1/3/4/4/134495393/ba29cf0c1f1.pdf
    • https://cdn-cms.f-static.net/uploads/4407331/normal_5f96691b010e1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vonusirukete/31137034983.pdf
    • https://s3.amazonaws.com/tudawufed/1999_isuzu_rodeo_manual.pdf
    • https://uploads.strikinglycdn.com/files/adade541-0a06-4ce9-bfd5-c01be8037470/foxerevunigenijolejeragu.pdf
    • https://s3.amazonaws.com/rowubunak/epidemic_sound_free_license.pdf
    • https://s3.amazonaws.com/lupuvogotog/swaadish_restaurant_dubai.pdf
    • https://s3.amazonaws.com/bulikowexunepov/botanical_names_of_plants_in_tamil.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025f0a.bin
e58ff71394d839ddcdd4c6efecf41984e4e1042eb391679af47f688c09cb0472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x25F0A 4640 bytes
font_01_sfnt_off00026f0b.bin
97903c6bbe32b5b4f5613f484dfc4e55b3d0d297cabf5bb6565ece0aaac26823		 pdf-font-stream PDF embedded font (sfnt) at offset 0x26F0B 24224 bytes
font_02_sfnt_off0002b7bc.bin
edf4c69d4bcc922ebc98a2957dfbe8faaa7dc6879263bc49833c82c95ac4b6be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7BC 17196 bytes

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