Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fae7ba35fc48fb…

MALICIOUS

PDF

81.7 KB Created: 2020-12-09 04:52:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: ae10f626a0f422fc61c7c7417d6b9e17 SHA-1: 5955b14969a99df67be16153faa4f68d978c591f SHA-256: 15fae7ba35fc48fbbf9cc3da0d8432edf5a518ac5341ba983a730c0c6406a36c
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious content. It contains a large number of external links, with one pointing to a suspicious domain ('trafftec.ru') that appears to be part of a link farm or phishing attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

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://trafftec.ru/123?utm_term=watch+goodfellas+online+free PDF link annotation
    • https://ruwaxejitoxa.weebly.com/uploads/1/3/4/9/134902813/kanobito-vinumoketokos.pdfIn PDF document text
    • https://fikadodovawewa.weebly.com/uploads/1/3/4/3/134320255/0e88f39b720.pdfIn PDF document text
    • https://melijezaziwoni.weebly.com/uploads/1/3/4/8/134851492/778de.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/cd41bbe2-cbca-425e-bede-2f1943f5f39d/gumab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91942cf9-dca7-4883-a61f-da8ced443646/dukinexiwinukibura.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc52a646b97992eb5777856/t/5fc851876031f473861bb508/1606963591372/islands_of_adventure_or_universal_studios.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/jedoxufebupavag.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/ic_cd4013_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/sustainable_development_goals_report_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51b2f17e7202640054395/t/5fc9f8f452b5874c8595438a/1607071988318/zombix_online_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/muvunekagok/friv_v8_muscle_cars_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0e27b4c4d833b8bfe31c/1606225448767/91614188393.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/98819881415.pdfIn PDF document text
    • https://s3.amazonaws.com/banijugoniragom/pdf_scholastic_news.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_off00010362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10362 5296 bytes
SHA-256: 95de90c34bf459a1f8f5bedf1481c1d5f0c79ed6b85e81ec2c65f05583885537
font_01_sfnt_off0001156f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1156F 10552 bytes
SHA-256: 16f709ce2e632c11eade40f3c435fc6a834683c7784c832394363b26ef671fd8

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