Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e5f18a200ce1714…

MALICIOUS

PDF

72.3 KB Created: 2021-01-09 10:45:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08e1fd52932e29dd7c628c6cd06a5f22 SHA-1: 1b361af97798db3639d22b1e47585a9bbdf25f08 SHA-256: 4e5f18a200ce17142026dbc4641563e01621cfd485c60e47183c7047d34d5a09
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ggtraff.ru'. This indicates the document's primary purpose is to redirect users to a malicious site, likely for phishing or malware distribution. While no scripts were extracted, the presence of a malicious URL and the ML classifier's high confidence score strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=luna+trim+shark+tank
    • https://cdn.sqhk.co/lilapanorup/HhbeKM1/xadafitufez.pdf
    • https://cdn-cms.f-static.net/uploads/4453100/normal_5fba18161fea5.pdf
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5fbda00d19326.pdf
    • https://cdn.sqhk.co/pivokazi/252hjjh/lyrics_runnin_naughty_boy_feat_beyonce.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/70577ea2-d66b-4ca2-a58c-99b6acf0a89a/29849720577.pdf
    • https://uploads.strikinglycdn.com/files/d0c40d5e-9339-4eaf-8038-57ce44b09132/factored_to_standard_form_converter.pdf
    • https://uploads.strikinglycdn.com/files/593bf148-f02a-4b07-80c5-b5c6ad06af8e/98310789727.pdf
    • https://uploads.strikinglycdn.com/files/59501206-5e1d-4458-b1b6-095fd319c812/regejujikugixupotuvixiz.pdf
    • https://uploads.strikinglycdn.com/files/34204c80-fdbe-4c6a-9083-a6a286465339/loroxebigobajajitit.pdf
    • https://s3.amazonaws.com/jezekemunidup/acapella_app_android_descargar.pdf
    • https://s3.amazonaws.com/bisegilupuf/bukuviwomivomawavetinor.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de03.bin
73ebe69936dd0468cdef2af18ad1214478a2313c3e0201bda2d4ff189ff17991		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE03 4900 bytes
font_01_sfnt_off0000ee82.bin
a5775cab4099bb96f1dbe6dc5eafd6e87a45914d53a65f426f1451b7af4cf61b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE82 11416 bytes

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