Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0be9dda97fb8aee…

MALICIOUS

PDF

79.1 KB Created: 2020-09-11 05:26:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02a268b45e3b98f66c5eecb673853584 SHA-1: 7b92a59c69a33eaa6dec6bf08065888d8adaa320 SHA-256: f0be9dda97fb8aee79025bac9a0c90b2a7b86bfe5f046615222cde334e5a860d
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that leads to a known malicious domain, disguised as a quest guide. The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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/wix?keyword=deadlier+warglaives+quest+guide
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/32543295319.pdf
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/64299500736.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4252/files/zalimix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9354/1532/files/glioblastoma_multiforme_brain_tumour_treatment.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0437/3230/4033/files/gouty_arthritis_guidelines_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0433/8027/7406/files/39288336187.pdf
    • https://cdn.shopify.com/s/files/1/0438/1265/1170/files/dalixevezosamak.pdf
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/mawotozukuwokuluderarun.pdf
    • https://cdn.shopify.com/s/files/1/0448/8052/7527/files/64628548814.pdf
    • https://static.usrfiles.com/ugd/a58b01_8393c5d646e34838ad3399b0d40cacab.pdf
    • https://static.usrfiles.com/ugd/cd79e3_2467f284cf694eab93599f113c6cc213.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1c0.bin
335cc1c157ff69c8f7b43fbd5eba188570ed0070b0481fb992d9c817cacbe70c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C0 5268 bytes
font_01_sfnt_off0000f3d0.bin
5c096f146e609b13d00c3cb2c4c4446b0a0efff0d4bb46dfaf95c36b02eed354		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D0 10580 bytes
font_02_sfnt_off00011849.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11849 16092 bytes

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