Malicious PDF — malware analysis report

Static analysis result for SHA-256 5019349b02704eea…

MALICIOUS

PDF

89.3 KB Created: 2020-08-17 11:41:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07d12b0ad4c578b06c53a734c61a79c4 SHA-1: 7f5e7f8b6d649a0cbdfead0fad43061f1bb4fe11 SHA-256: 5019349b02704eeadf67ec7559f9b3469f782a1be004579a7453b1a42e021d88
152 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains the URL and keywords suggesting a lure. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=caballeros+templarios+pdf
    • http://files.awakeningpeople.com/uploads/1/3/1/4/131438899/pebofalebisepo_zugifuvavowa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/sukusegitezidumopor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/44858506940.pdf
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/womofokutazadesaretuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/wavomavumukomemedidilato.pdf
    • https://cdn.shopify.com/s/files/1/0430/4997/5961/files/tejakofuborasarareku.pdf
    • https://cdn.shopify.com/s/files/1/0436/7984/2457/files/sutakufirikufuziwalep.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0433/1080/9256/files/65589953165.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/bedrock_font_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/cultivo_de_cajanus_cajan.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_off00011ffb.bin
3b5a9a6e658b2afdde100c1ff43ef50571f0fccad5695bb9220d59cfc55aa168		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FFB 5232 bytes
font_01_sfnt_off000131a7.bin
04a1fb137ac720586e1325d2788243bf82862476a0638c2ad668b4840e1c4966		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131A7 11516 bytes

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