Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d516e2cf3fd7409…

MALICIOUS

PDF

50.5 KB Created: 2020-08-28 11:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e4725cf489a21338013ea6b75642626 SHA-1: 5f5f937727d88088662bd90eb3fc6581830f46d8 SHA-256: 1d516e2cf3fd74098a99ff38bf367bdff7232a4c25f5e391c04239fd11542ca1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a guide for 'Ratchet and Clank: Going Commando'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this malicious intent. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, likely for SEO manipulation or to distribute further malicious content. The ML_NYX_PDF_MALICIOUS score of 0.999992 strongly suggests malicious behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ttraff.cc/pify?keyword=ratchet+and+clank+going+commando+guide
    • http://files.baraniakenterprises.com/uploads/1/3/1/4/131407511/8339165.pdf
    • http://files.merakihandmades.com/uploads/1/3/1/6/131606135/tigutesipu.pdf
    • http://files.seasreligion.com/uploads/1/3/1/1/131163851/burenalamo-jikawedi-pitasafaguzo-vesepufakuxex.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/vopekadebiwopave.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1097/files/sae_autonomous_driving_levels_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2314/6909/files/pamamagibisiroj.pdf
    • https://cdn.shopify.com/s/files/1/0439/4919/5419/files/beauty_and_the_beast_by_jeanne_marie_leprince_de_beaumont.pdf
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/english_marathi_dictionary_application.pdf
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/69407126508.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/nimupemawateverurekox.pdf
    • https://cdn.shopify.com/s/files/1/0461/8544/7587/files/sezigeperujew.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/list_nba_teams.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/bogogo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9887/3762/files/rugafotigej.pdf
    • https://cdn.shopify.com/s/files/1/0463/3378/8317/files/chest_physicians_guidelines_pulmonary_embolism.pdf
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/lagodox.pdf
    • https://cdn.shopify.com/s/files/1/0431/3474/6790/files/faduzupinujatolotozi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086f7.bin
a8b72a9e2745cb8c1fc4ba603788d183776442f896161eea720626af73f5f27a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F7 5152 bytes
font_01_sfnt_off00009850.bin
4d70cb77dce028f733799dbfabef93a1aa219d284bdd287e73a97c07e5f043c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9850 10636 bytes

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