Malicious PDF — malware analysis report

Static analysis result for SHA-256 06480811df7defc1…

MALICIOUS

PDF

66.2 KB Created: 2020-11-18 13:55:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 207f3e8da371740e6e8bb29726ddc313 SHA-1: 75a23fac5852f201857c47fc3210821b37a2d23b SHA-256: 06480811df7defc1b1e2397d460c79903f97edfae664e94e70a68ca2958b4fb8
214 Risk Score

Malware Insights

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

The PDF contains embedded links, with one critical heuristic identifying it as a malicious redirector pointing to 'traffmen.ru'. Another heuristic indicates a PDF link farm, suggesting an attempt to generate traffic or distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffmen.ru/123?utm_term=power+window+motor+and+regulator
    • https://cdn-cms.f-static.net/uploads/4382407/normal_5f93415d31e73.pdf
    • https://cdn-cms.f-static.net/uploads/4369150/normal_5f9f69362dded.pdf
    • https://cdn-cms.f-static.net/uploads/4389354/normal_5f9fc927b2a40.pdf
    • https://cdn-cms.f-static.net/uploads/4474734/normal_5fb01363ebaa2.pdf
    • https://sazejorewisiboj.weebly.com/uploads/1/3/4/4/134459615/3391911.pdf
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f87369fcb287.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gavexilatuvitaz/48944304855.pdf
    • https://s3.amazonaws.com/jivuxo/accelerator_oscillator.pdf
    • https://s3.amazonaws.com/bitizopovopaso/free_fire_alarm_inspection_report_template.pdf
    • https://s3.amazonaws.com/lomogas/tobapewotipabale.pdf
    • https://s3.amazonaws.com/gizonukorad/megaman_x3_doppler_lab_stage_guide.pdf
    • https://s3.amazonaws.com/falevi/oral_and_intravenous_bisphosphonate_induced_osteonecrosis_of_the_jaws.pdf
    • https://s3.amazonaws.com/posufij/hp_photosmart_m417_digital_camera_manual.pdf
    • https://s3.amazonaws.com/gotenukevepunin/strona_bierna_i_czynna_angielski_wiczenia.pdf
    • https://s3.amazonaws.com/wilugugo/butugekixowo.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_off0000c5af.bin
09d9497904087da38c9d4af379b7792ac489d31a31c1b729582eccad83de8552		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC5AF 5060 bytes
font_01_sfnt_off0000d6df.bin
794f58286f467aac3fb2793affce6b4a996f1b750e1ee983d87604b819715a67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DF 10952 bytes

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