Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64e33364334fad4…

MALICIOUS

PDF

71.4 KB Created: 2020-12-19 07:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 8c83bfb917c069395469a336aaaf2601 SHA-1: f4ddb3edee66362d3439a4b985be618d785e3e31 SHA-256: a64e33364334fad47cfc9e86903748a87dc4408b98de429a665ee58a5b41d456
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 'https://traffine.ru/strik?utm_term=loomis+pdf+head'. This indicates the document's primary purpose is to lure the user to a potentially malicious website. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffine.ru/strik?utm_term=loomis+pdf+head In PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_5fad823c7dd7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469847/normal_5faa13965dd62.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378390/normal_5fca6ca06fa84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389568/normal_5f9d97cdddfb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495390/normal_5fd27b4db0c2f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6821d94c-d9ba-4b78-a060-c839230dc5d2/pekusapulasidigani.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10966a879396864091016/t/5fce87466cfa5828bc104550/1607370567613/bts_funny_videos_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67134a5bc066edfcb9abb/t/5fcf9ff4cd9a2056ff7eb6fb/1607442421380/2708715716.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd030ccc750a3b5a07033a/1606222606475/vexubep.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc9f93f65a9a5fd492d713/t/5fdcafa63f4cde091ae07880/1608298410842/bejof.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5156917e7202640050e05/t/5fc63960bc819f1cf4ac1999/1606826336861/53809593868.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/mens_jeans_style_guide_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cf3a5e8e827d428d5c84/t/5fc154f71972c46e3cd08313/1606505720336/biome_webquest_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e74388a-6409-4c85-b4ff-f8bd228e785d/25537380724.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/away_in_a_manger_sheet_music_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d05b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD05B 4696 bytes
SHA-256: 62b4b9cbcb6a4c72c749c3816405f49741cfc9ad6ab4c9f2b9664ccc7b9284d3
font_01_sfnt_off0000e058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE058 10060 bytes
SHA-256: 4030cd687c2ca3ec78ffee0e1f160ad1470d1841ed64438e5d1ef529973c6791
font_02_sfnt_off000102b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B0 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

Open this report in the interactive analyzer, or submit your own file for analysis.