Malicious PDF — malware analysis report

Static analysis result for SHA-256 267c35614d69fdcd…

MALICIOUS

PDF

68.0 KB Created: 2020-12-16 08:24:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a20af19e912e8795a2c2371ea26f73ff SHA-1: e4241e8b3f3ea0e014e74399d30a498a27cd6bf2 SHA-256: 267c35614d69fdcd5ea7cc2ce0e368d8a8c1b7fea4308e5c1ffe1cada833672a
244 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of embedded links, many of which point to disposable domains or redirectors, suggesting a link farm or phishing operation. One prominent URL, 'https://gettraff.ru/strik?utm_term=minecraft+light+level+mod+1.12+2', indicates a lure related to Minecraft mods, likely to entice users to click through to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://gettraff.ru/strik?utm_term=minecraft+light+level+mod+1.12+2 In PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/lolezugedakodipun.pdfIn PDF document text
    • https://vexepagofebove.weebly.com/uploads/1/3/4/8/134866030/sakufuvagugiful.pdfIn PDF document text
    • https://wakevilapiz.weebly.com/uploads/1/3/4/9/134903367/fasamamasawe-vizux-nulubuduka.pdfIn PDF document text
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/sodokazid.pdfIn PDF document text
    • https://regogugone.weebly.com/uploads/1/3/4/8/134891767/7e84b7e2155acf6.pdfIn PDF document text
    • https://levibezime.weebly.com/uploads/1/3/3/9/133986639/2ae034.pdfIn PDF document text
    • https://zenijubam.weebly.com/uploads/1/3/4/8/134884092/vezubuladujugok_zavilunoj_mikebi.pdfIn PDF document text
    • https://bidovakufizal.weebly.com/uploads/1/3/4/5/134586087/8089271.pdfIn PDF document text
    • https://dixugoruvaweg.weebly.com/uploads/1/3/4/6/134616472/masuzaworogewej.pdfIn PDF document text
    • https://lazumuron.weebly.com/uploads/1/3/4/8/134863931/wamuwoteta_pamujojirelu.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/5fbce344be7cfc36344e8aaf/t/5fbe406d4f98375720ac3d7e/1606303856504/fijudinogivuditubew.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/composicion_quimica_del_cemento_dental.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac18009e-4188-462a-8541-b3b7b5d38a33/62488282257.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f22ee5c7695ca99bddc9/t/5fcd5f538a55f2188b89bf67/1607294804456/zagax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e29d230-974f-4817-8d64-0df7bbbba278/26277061319.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_off0000b7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7AA 5536 bytes
SHA-256: 7683285264832f8fbda4009f3b18b1f5321f015b4e374bff0386606c55c4a8c5
font_01_sfnt_off0000ca6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6E 10464 bytes
SHA-256: 1c4e13bc1c289ee2c64aa1d095e755cb087e17a4a65bc85232d84ae61ad1c058
font_02_sfnt_off0000ee8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8E 16064 bytes
SHA-256: 6f41d85279102efce3c4bd26fddb767baf9b68a4f55e239fba9bedc2a2d3b953