Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ad4c4b240b9ad8…

MALICIOUS

PDF

49.3 KB Created: 2020-08-17 08:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04d86d5b9210b89daf82102f21e64c2d SHA-1: 2a374fc986bc85d8f6b8c89b03ce64c3930a7774 SHA-256: d3ad4c4b240b9ad843f762f9a7e6b79b0eea6d1e9dca0f647afd8dc6a07e7732
150 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.com'. The document body, though heavily obfuscated, contains text referencing 'Mr bean animated series new episodes' and the malicious URL, suggesting a lure to trick users into clicking the link. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to obscure the malicious destination. The ML classifier also strongly flagged this PDF as malicious.

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/pify?keyword=mr+bean+animated+series+new+episodes
    • http://files.honesthomeinspector.com/uploads/1/3/1/4/131437233/xodifajer.pdf
    • http://files.gocmovies.com/uploads/1/3/1/4/131453695/junita_rapos_wunisifawur_tupodukuwomit.pdf
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/zobada.pdf
    • https://cdn.shopify.com/s/files/1/0438/2982/1602/files/10087947149.pdf
    • https://cdn.shopify.com/s/files/1/0436/6660/4182/files/vox_ac30_schematic.pdf
    • https://cdn.shopify.com/s/files/1/0446/1743/3251/files/the_outsiders_1983_google_docs.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/68698529916.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41267837863.pdf
    • https://cdn.shopify.com/s/files/1/0433/6500/7509/files/dosat.pdf
    • https://cdn.shopify.com/s/files/1/0432/2148/3687/files/wudunov.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/folofonekojukidalefow.pdf
    • https://cdn.shopify.com/s/files/1/0440/1112/6942/files/86217865658.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_off000076aa.bin
0d3988a67307135d65dc59efe0858f7fca74f32aa6894e1cf7d20f8be7273ac2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76AA 5100 bytes
font_01_sfnt_off000087ec.bin
5948760abb47bf84cc80ef18ea36b44401202a959b5a6c4b64a130e176a7b88d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87EC 10088 bytes
font_02_sfnt_off0000aa57.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA57 4324 bytes

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