Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0bf023bcd2ab9ba…

MALICIOUS

PDF

75.3 KB Created: 2020-11-25 09:05:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a58ee1f92ea1d112ba7196d1e974ff9c SHA-1: 1c1844a5fde6cbf1a75dbcb0686e7308c1a5c0eb SHA-256: f0bf023bcd2ab9ba4777c50fd9cbfd2860241717e25e6ad4b56d8ddfc4317c20
214 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffking.ru', which is likely used to lure victims to malicious content. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including one to 's3.amazonaws.com/ladiwuzetawedi/muvezibez.pdf'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing 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
  • 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://traffking.ru/123?utm_term=d%2526d+critical+success+stories In PDF document text
    • https://goduvozimaku.weebly.com/uploads/1/3/1/3/131380582/pukuka.pdfIn PDF document text
    • https://finiluxexolije.weebly.com/uploads/1/3/1/8/131856594/regutoxutavi.pdfIn PDF document text
    • https://kuguzozivef.weebly.com/uploads/1/3/0/7/130739994/1112842.pdfIn PDF document text
    • https://raxabebawozovi.weebly.com/uploads/1/3/4/3/134311701/230916.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/ladiwuzetawedi/muvezibez.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/olympic_weightlifting_training_program.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c82d6c-c87d-49c6-b020-460230aa5630/funepimeluxebuta.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/ponapojepidexalelurepowas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64b9d63f-87ef-4c21-a52c-9be33eadbfe0/22332583712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c35e899d-f76d-480a-8091-5ab9dc2861c6/pedipinadewivinamazabesab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/093fabc8-934b-4a0a-a9f6-d3484bd83887/2009_buell_1125cr_specs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42eea381-658c-4659-bad8-d42975d167d6/star_citizen_2.6_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/abashed_sentence_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/070dc781-5615-4fb9-96c7-23ac7641c085/ninuxukejaxevawe.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/cultivo_aguacate_hass.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_off0000e2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FC 4156 bytes
SHA-256: d9d9eb8b5a67a8494ca5a9593d54773c41ba913a17cb426b52e0a193c0b11448
font_01_sfnt_off0000f12a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12A 16516 bytes
SHA-256: 734d7822c57605ceeeebe50ec49ccb97f6d9b1ed6c40d70dadaa0c5ac6688b0b

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