Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1062fbc1f92adf…

MALICIOUS

PDF

57.8 KB Created: 2020-11-10 04:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a256b952d284daf671890000773c5bce SHA-1: 2954846ed52d678f1be38e2c95c71589dbda6017 SHA-256: 0f1062fbc1f92adf9cf0efdfe1fa2fa89acbcc209c3e4a8f2dcc163b01b48abc
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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?keyword=testout+security+pro+exam+answers In PDF document text
    • https://zoniziwaxetoxa.weebly.com/uploads/1/3/4/4/134441104/7765373.pdfIn PDF document text
    • https://rasiporimi.weebly.com/uploads/1/3/4/6/134614798/3f2711c3730f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369317/normal_5f965d8d9ef7d.pdfIn PDF document text
    • https://fanunidepaz.weebly.com/uploads/1/3/4/4/134474969/184321.pdfIn PDF document text
    • https://wodedofa.weebly.com/uploads/1/3/4/3/134320626/2074507.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/31a2d609-7cc5-4ef9-837b-c1f92a8c52d1/nalusup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9863f571-47ec-4c7b-8e53-c0dc3a192053/lettre_dun_soldat_a_sa_femme_premie.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/oxford_advanced_learner_s_dictionary_8th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/luvuxegakagigiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/419a7f81-152d-431f-87a2-eae2ae014769/download_jivu_chu_rasila_tara.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/sabubutexulesefuputodo.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_off0000a954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA954 5256 bytes
SHA-256: 25b3ec212db4e3f45c43376bc3a7050cf12fc5d1b311aec747673f014ca4ce7e
font_01_sfnt_off0000bb3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB3A 9252 bytes
SHA-256: 16ed3b475db9212b1289ee90440a0910a663cdb150baaba6dc60cdfd3a426cc9