Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd954dce24033de…

MALICIOUS

PDF

78.7 KB Created: 2020-11-14 16:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c8e49bb9dfebe8e9b93fd52f926ccd80 SHA-1: 14a288decf51ee04967a0483b1d859bff9688a17 SHA-256: 0dd954dce24033de89603a95a8c5029265138a5c8be04486ae50382f21f56537
214 Risk Score
Tags
free-cdn-ebook-manual-lure

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 embeds a large number of external links characteristic of an SEO link farm and 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 0.9994

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://ggtraff.ru/strik?utm_term=sketchup+pro+2015+with+crack+free+download In PDF document text
    • https://jopovasido.weebly.com/uploads/1/3/4/6/134619877/64fb64fd0fe4.pdfIn PDF document text
    • https://rogenogenitel.weebly.com/uploads/1/3/4/3/134316557/vanetamarij.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/ff23a3af-d0e4-42c0-a7a0-2efab5bd1c13/rock_lee_boruto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d70d8857-5f72-406d-a099-7162e66c9347/orvis_dog_collars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dcbcd4c-ae68-4880-b356-79e3511a3bca/40087784567.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/koniwisunu.pdfIn PDF document text
    • https://s3.amazonaws.com/nepawigexa/vocab_level_f_unit_9_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb4e180d-56b1-4583-8454-ff7fe0c754fb/83120264453.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/72186414036.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/6098958910.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63D 5776 bytes
SHA-256: ec038d268c08764bb9dffff8ba0677692d70233102f73ceb6ad1ae9e152bfcb2
font_01_sfnt_off0000ea05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA05 14364 bytes
SHA-256: 224ed4d2aa8c7ae5ce231b3965fb6e0db8970f328bdff59ab3cdfb879e350a47
font_02_sfnt_off000117d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D8 16660 bytes
SHA-256: 20f912b6932addfa27ab6a24080b7b74380abf367cf774223465ee8118a36e48

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