Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e3a321bed0078e…

MALICIOUS

PDF

60.1 KB Created: 2020-12-17 21:56:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1c3058b21d8c0e5a520f7449767c9e42 SHA-1: c45284fb688bb44c7c766f672f3c6e85b861425b SHA-256: e3e3a321bed0078eed581b5442bd9caf251d3151583942e16493880b103caf34
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, combined with a high ML classifier score and ClamAV detection, strongly indicates malicious intent. The embedded URL is likely used to lure the user to a phishing site or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=convergence+and+divergence+of+sequences In PDF document text
    • https://cdn-cms.f-static.net/uploads/4504641/normal_5fad3f5bcb291.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5f96a13ceaae8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477379/normal_5fbc23c81128e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_5f8ab868d8f4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378167/normal_5fd727eede38b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5ccf068612547ed7f99b1/t/5fc815748bd7793567427a1f/1606948212187/5015267060.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/wiseguy_nicholas_pileggi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f385f9866f3fd2d4a131/t/5fc756c348d5672cfb3d2dda/1606899396299/dufuxigedivamatasanujupan.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51e61affbf90a6605cce4/t/5fc61cf664571256540d1860/1606819062688/lubejujizex.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dd9fec917750a3d7b949/t/5fd0a23d3bcf75077a86b7ab/1607508542652/22842859567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac3b4101-54b6-401b-8d46-bb5227b6ee6d/thomas_putnam_the_crucible_act_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee4d488a-de5e-4eba-b2f2-7656a0a3159e/sivowisitovad.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27b65a8793968641242c3/t/5fd15726b0f0f842d7968006/1607554857054/lotukokabazalenuwek.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/football_scouting_sheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/42139927755.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_off0000afdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFDC 5248 bytes
SHA-256: b27e9fc5f4ae66378c15148e9e1902d56171516f70ee53b339a9466e9c62572b
font_01_sfnt_off0000c1c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1C7 9944 bytes
SHA-256: 3ca23a7dbae3fca60473264876690b6606329eb1256e81f6a40afdb4515c8e2b