Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dd49f9aa79f1835…

MALICIOUS

PDF

69.4 KB Created: 2020-12-02 01:56:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9b0f2931e1f17f5d54d0ac096625e0d4 SHA-1: 939f8167db79b7e015b7c742bed028ddc0c7e8c6 SHA-256: 0dd49f9aa79f1835d2b32f4f1ffc2340a37ea6e58ec44bc06efb56667aae4ae2
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=skyrim+golden+claw+owner PDF link annotation
    • https://tanaxigurav.weebly.com/uploads/1/3/4/2/134266775/4c2cb17da89382.pdfIn PDF document text
    • https://talogaxuzule.weebly.com/uploads/1/3/4/5/134596774/bovedokepovor.pdfIn PDF document text
    • https://woxukobu.weebly.com/uploads/1/3/4/3/134392577/6791687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425924/normal_5fb5160c7a662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383802/normal_5f98fbc9d9aca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373782/normal_5f93285826d02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_5fbccad574964.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5fc0d6c2d07f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0e2740a2757459be2c9b8/t/5fc21ccbfa04221c71678fc7/1606556876288/according_to_the_storage_ladder_protocol_fish_and_seafood_should_be_stored.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c008451b-5ee7-4799-8560-076a403486c1/baby_animals_esl_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/suweverit.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4efc2dd96f5918e528b2/1606373116928/apk_showbox_download.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/90299252883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea1d92f6-7a51-4df7-a4b6-cc4090125673/pedisajof.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/16601784844.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_off0000d3c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C3 5444 bytes
SHA-256: 23e77ab30bb39c6895b1e87aaaa55bce6386558381c5f09b3acf7e68f2ea28bc
font_01_sfnt_off0000e64a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64A 10076 bytes
SHA-256: caa1ba92560ec59a6525f0765a2e84f195896a7b1dd072ee4ae9c7ae3345bd0b

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