Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9d85f52e162318d…

MALICIOUS

PDF

46.2 KB Created: 2020-08-23 02:41:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66a56c029ced80aa0a070f6c9003bd20 SHA-1: 78805c1dfcfb5e1aabe6289833189f4ce9b52b7f SHA-256: b9d85f52e162318d88ad04fc7e880e8c83e297eb5685ff532a4c2d114c1897a7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though partially corrupted, contains the same URL and keywords related to wallpapers, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to improve SEO and disguise malicious intent. The primary malicious URL is 'https://ttraff.ru/pify?keyword=ultra+hd+wallpapers+1080p+for+android+phone', which is likely used to redirect users to a malicious payload.

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.ru/pify?keyword=ultra+hd+wallpapers+1080p+for+android+phone
    • http://files.simpleessentialsforlife.com/uploads/1/3/0/7/130739415/sezugarikirema.pdf
    • http://files.autopoiesis.life/uploads/1/3/1/4/131453684/8070935.pdf
    • http://files.bojanradovic.com/uploads/1/3/2/7/132712139/9835972.pdf
    • https://cdn.shopify.com/s/files/1/0440/7037/1493/files/apotheosis_mod_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/wilizuxozapurugitoxe.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/vufujegufakuruxusegabelan.pdf
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/designing_brand_identity_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/84935238067.pdf
    • https://cdn.shopify.com/s/files/1/0432/8423/4396/files/manag.pdf
    • https://cdn.shopify.com/s/files/1/0462/7762/3957/files/char_griller_akorn_6520_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0188/files/gofoposaziwizupomojobimi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3342/0195/files/67320744359.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_off0000762e.bin
0b9eefb19df70014ac75a317bc784e44faeb72aa5a8b71b4a15bcad4ef37abe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x762E 5600 bytes
font_01_sfnt_off00008949.bin
fd9ab71fe04876f23c4907fb705102f63304cadff1888c422c52bee90b7b08a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8949 10016 bytes

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