Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ce5b8ba28eeb57…

MALICIOUS

PDF

64.1 KB Created: 2020-12-24 05:04:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 815b5b42490c46aaaf73eb0c31329d73 SHA-1: 6198d20b2c1d0eb80c4ee723a88e034793fcf9ad SHA-256: f8ce5b8ba28eeb57082e292f794a4b9417f207748d391baaf488838a91d74797
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a link farm, directing users to a URL that appears to be a lure for a game mod. ClamAV also detected this file as a phishing trojan. The presence of multiple external links, including one to 'trafficel.ru', suggests an attempt to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=steel+and+flesh+mod+apk+2.+2 PDF link annotation
    • https://duvutotan.weebly.com/uploads/1/3/0/7/130775700/tolikozuxavuriwexo.pdfIn PDF document text
    • https://mudekireziwafa.weebly.com/uploads/1/3/4/7/134730614/1783183.pdfIn PDF document text
    • https://tadomowiwelam.weebly.com/uploads/1/3/4/7/134744739/4379249.pdfIn PDF document text
    • https://cdn.sqhk.co/kibizatududo/fibdFSd/switchblades_for_sale.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wixatax/88068914854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b72ded8-4520-4a85-ace9-43c4741775b7/pen_and_ink_drawing_a_simple_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d86b649-91b3-44ba-8d01-6f5ec6f2da4d/gudiwideginezadaruwus.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/masterbuilt_40_digital_electric_smoker_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39c50dd2-5747-426d-82dc-aff16218405a/skyrim_house_mods.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/3723900467.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/coat_of_arms_template_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ba37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA37 5516 bytes
SHA-256: c1c1c03e39f31521b4ef0869b878b78544630e7970b9d2508c5c88f0e7188d86
font_01_sfnt_off0000ccdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCDD 11340 bytes
SHA-256: 7170c0539f9906e1d4d5256630ef30b54ee8472c3aa07a9d8c5499fb05529598