Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d9c73fe4421a80b…

MALICIOUS

PDF

61.8 KB Created: 2020-12-31 11:49:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fcd9419aafd9290c774e83252716d9e6 SHA-1: c99a09028053ad0af9b76533978510cf66d13d18 SHA-256: 3d9c73fe4421a80b2f899b518c17f6218e4e52c6695939fd429651b30b477253
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier, including critical alerts for malicious redirector links and a link farm. The embedded links, such as 'https://traffine.ru/123?utm_term=tanger+outlets+columbus+hours', are designed to redirect users to potentially harmful websites. The presence of numerous links suggests a phishing or content-scraping campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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/123?utm_term=tanger+outlets+columbus+hours In PDF document text
    • https://wokugosag.weebly.com/uploads/1/3/4/3/134339956/rukasoxip-togod-fupatek.pdfIn PDF document text
    • https://cdn.sqhk.co/kezixowog/wfNjcje/16514913942.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/jeifBje/pojesoneb.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/hhgcicZ/nezeno.pdfIn PDF document text
    • https://cdn.sqhk.co/dijobika/Ukijifu/59008766487.pdfIn PDF document text
    • https://kitafawavan.weebly.com/uploads/1/3/4/7/134702073/088cc78ec46f.pdfIn PDF document text
    • https://cdn.sqhk.co/suwezuzifu/jdihrgj/carriage_kia_in_gainesville.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/gifiz/australian_animals_koala_information.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/26627038754.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/oxford_word_skills_pre_intermediate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da37fb6e-cd51-4e08-8ac0-2065c7f38936/bowurofone.pdfIn PDF document text
    • https://s3.amazonaws.com/pexodugosa/37489764854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0476c188-28fd-451d-8b54-c0b6b8ddc260/71873084210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb606308-6800-4145-89be-7ad66e489b92/jibogunajaduwufonuf.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_off0000b491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB491 5300 bytes
SHA-256: 7989aa48d74a97fb402971731e52f2bc0e7ea348c8915409fefbeee43fde36e7
font_01_sfnt_off0000c66d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC66D 10076 bytes
SHA-256: 3a88416b5044f86548054ccaf6f347de7797619337f69f25b76c66301d833b28

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