Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c00f6895756a205…

MALICIOUS

PDF

67.1 KB Created: 2020-11-18 17:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 37b76b090ce18ffaf1791352a877deea SHA-1: 7fc0d3fc28a3c456ab65974d6b1212134db8d5df SHA-256: 9c00f6895756a205df54d419df21c90442cc54794f77e2c36f2ebc61f76a9549
244 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains a large number of links, many pointing to redirector infrastructure like 'traffking.ru', suggesting a phishing or malware distribution campaign. The document body, though truncated, contains text related to album downloads, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=gunplay+album+download In PDF document text
    • https://jopekaraxawil.weebly.com/uploads/1/3/4/5/134589640/9284686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414689/normal_5f97a7963fa84.pdfIn PDF document text
    • https://jugurapofan.weebly.com/uploads/1/3/4/3/134339640/2332391.pdfIn PDF document text
    • https://sefizofemaj.weebly.com/uploads/1/3/4/2/134266575/mevak_poborilisopijo_vobemolanabe.pdfIn PDF document text
    • https://kugodago.weebly.com/uploads/1/3/4/4/134491336/vozetovuxukelul.pdfIn PDF document text
    • https://fumadutukit.weebly.com/uploads/1/3/1/4/131437402/vosituvemap.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/xadiwuz.pdfIn PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/77c0fb8.pdfIn PDF document text
    • https://birisudim.weebly.com/uploads/1/3/4/4/134467091/a08435.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nimemoroligamaj-tafixidupara.pdfIn PDF document text
    • https://rixijufufapug.weebly.com/uploads/1/3/4/4/134497528/2951351.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/remufuzu/26485794577.pdfIn PDF document text
    • https://s3.amazonaws.com/potevip/definition_of_narrative_paragraph.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/wokisinuxojunowe.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_off0000c36c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC36C 5196 bytes
SHA-256: 45d8380cbe94707ef2d8f4333a824ee5b9d4c3836c33e439b19cf5ce2fc81453
font_01_sfnt_off0000d51e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51E 13408 bytes
SHA-256: 3eef07803fa304a8f401e1d1df6ce146cef781b4e98a8961fa40d19226961f25

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