Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c462df31932e3cb…

MALICIOUS

PDF

38.3 KB Created: 2020-09-01 10:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01df833743536bb570953d3496e78486 SHA-1: fa57337092b4f44166cce8c74edf63c21b646184 SHA-256: 4c462df31932e3cb367cd5b354a0ed4dcab77e886b0035454b5ccf53660fb9ce
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a meme template, aiming to lure users to the URL https://ttraff.club/wix?keyword=hey+look+at+me+meme+template. The document body and heuristics indicate a social engineering lure. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content widely.

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.club/wix?keyword=hey+look+at+me+meme+template
    • https://static.usrfiles.com/ugd/625844_23413d61017f4c0787c433dbbfae5ef8.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc467c1939b6440eab8b3330eb0c66cc.pdf
    • https://static.usrfiles.com/ugd/37428b_743e6ba744f447cbbb7cff8ad4edadae.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_01d28c6172f94061ba8970bd8b058ac4.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/best_android_casual_games_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/datumaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/4013/5589/files/describing_people_s_personalities_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/symantec_bluecoat_proxy.pdf
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/igcse_edexcel_maths_b_past_papers.pdf
    • https://cdn.shopify.com/s/files/1/0439/0679/3627/files/26952654334.pdf
    • https://cdn.shopify.com/s/files/1/0439/3811/9838/files/80279133678.pdf
    • https://static.usrfiles.com/ugd/24853a_fd6ad2caea0d4867bac6c499a376121c.pdf
    • https://static.usrfiles.com/ugd/4c76bf_63627c4a52ee49258987b6dc9455b398.pdf
    • https://static.usrfiles.com/ugd/18122d_725993001bdd4a8db2b762e292595c36.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_off000056fe.bin
b6c0989b68abf76b5b576a7ecb4a9006310d090ce790b2160022324190064dff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56FE 4820 bytes
font_01_sfnt_off00006757.bin
77cededeeb6048d4b48debc08f4421341da98f4cf78e76b3788872dfb162262f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6757 10872 bytes

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