Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e4ff83f67acae7…

MALICIOUS

PDF

70.1 KB Created: 2020-12-29 10:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6d481202ce5fd23c8f1331eb2d694977 SHA-1: b82de423ef9559de412a15c6815111f5b86bedb5 SHA-256: d2e4ff83f67acae70a34c269fd8bcee61cb05ba0cebb670f4d0e6ec55b9c21c8
184 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with a primary redirector link pointing to 'traffine.ru'. The document's structure and link farm indicate an attempt to lure users to malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=plasma+invaders+classic+arcade+space+games+like In PDF document text
    • https://vifesomojijafi.weebly.com/uploads/1/3/4/3/134337648/8695453.pdfIn PDF document text
    • https://cdn.sqhk.co/bidubuwawi/haicFha/invaders_synonym_definition.pdfIn PDF document text
    • https://viramerobudob.weebly.com/uploads/1/3/1/4/131483281/gagutuvi-mirilebofel-daluwuvirowili.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/ragoder_sovose_vulufi_tutixap.pdfIn PDF document text
    • https://lizodeva.weebly.com/uploads/1/3/5/3/135342900/ropedonuxi-depedugari-nodidigugojar.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/ihhhjgr/cheapest_toy_store_near_me.pdfIn PDF document text
    • https://voxivunesiru.weebly.com/uploads/1/3/1/4/131407918/tetukapub.pdfIn PDF document text
    • https://vowesajakekefi.weebly.com/uploads/1/3/4/5/134513426/5760752.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/hR8ngj1/escape_the_prison_adventure_game_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/RD35jF5/xovoguvunuvewifub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/271290be-b8ca-4c49-acb4-ede55c3d9801/nerom.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/la_tia_julia_y_escribidor.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/femtosecond-_laser-_written_waveguides_in_glasses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46502de2-44aa-462e-8c57-f888bb3f7771/74258873652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a08b5fd1-3068-431c-95d3-f845a763fc84/torrentz2_search_engine_unblock.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE82 5516 bytes
SHA-256: fd37b37cc12f1a507f9845b2cc5630d354e66327ba1044409bbb43707cd702fe
font_01_sfnt_off0000d13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13B 10676 bytes
SHA-256: 8a90d5fac0d3d135afcfb52bd7ced46a58c0730b60a4b80bd5120b164cc4301e
font_02_sfnt_off0000f5fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5FC 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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