Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a06b46f6e9b7ed4…

MALICIOUS

PDF

61.5 KB Created: 2020-08-19 06:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9b4ad7d45489d0f95f1ccda02fbb71e SHA-1: 73bf76b908296166771fc1f40fe320db5d202425 SHA-256: 2a06b46f6e9b7ed407ddb17b03379902e83ebe8dc0325a7aeb80ad4c1182b618
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious URL, disguised as a Final Fantasy 14 character creation guide. The ML classifier strongly indicates maliciousness, and the PDF structure suggests a link farm designed to distribute malicious content. The primary attack vector appears to be social engineering through a deceptive document title.

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.ru/pify?keyword=final+fantasy+14+character+creation+guide
    • http://files.saintsebastianschool.com/uploads/1/3/1/6/131637016/buregejapi.pdf
    • http://pivofoto.shopthetlily.com/uploads/1/3/1/1/131164250/nuges.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/pejosijidel.pdf
    • https://cdn.shopify.com/s/files/1/0433/7287/1832/files/atomic_absorption_spectrophotometer_principle.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98455436519.pdf
    • https://cdn.shopify.com/s/files/1/0430/8969/0773/files/nano_go_to_end_of_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5479/files/28050898488.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/3100392900.pdf
    • https://cdn.shopify.com/s/files/1/0431/2619/4342/files/rizuvogokibuvufugodikalo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9675/1771/files/1142031626.pdf
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/58666948038.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_off0000b0f7.bin
12c576c80991172c1fee4871bb3cd9a396459e1161dbadefe00d9cda964a1a62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0F7 5480 bytes
font_01_sfnt_off0000c39a.bin
237559353094634e0e1f2de1062e64135a6d2760e37e904a71d43daa5b46c9a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC39A 10932 bytes

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