Malicious PDF — malware analysis report

Static analysis result for SHA-256 8968c8d3744b02ea…

MALICIOUS

PDF

40.2 KB Created: 2020-08-17 13:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63543f338834c59e03be85a30dbdc195 SHA-1: f377a39c363692ba345e19016e7acf3900598f35 SHA-256: 8968c8d3744b02ea390a993427d2d9c4296e6215fe2aa6041c83ffd6cf7e1a55
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, https://ttraff.ru/pify?keyword=character+sprite+sheet+maker, is flagged as a known malicious redirector. The document body, though partially corrupted, also contains this URL, suggesting it is the primary lure. The presence of numerous Shopify-hosted PDF links indicates an attempt to obscure the malicious redirector by blending it with seemingly benign content.

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=character+sprite+sheet+maker
    • http://files.anthonymvirgiliomusic.com/uploads/1/3/0/7/130738484/lovipuki.pdf
    • http://kibet.archvizblender.com/uploads/1/3/1/4/131482995/4140338.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6938/files/16569005742.pdf
    • https://cdn.shopify.com/s/files/1/0432/7328/9888/files/addams_family_theme_song_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/7491/2410/files/fallout_3_bemoth.pdf
    • https://cdn.shopify.com/s/files/1/0437/2057/3080/files/padi_advanced_open_water_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/7168/4252/files/ladejosup.pdf
    • https://cdn.shopify.com/s/files/1/0429/5272/0543/files/82567998285.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/91498659200.pdf
    • https://cdn.shopify.com/s/files/1/0428/7427/3948/files/67806836115.pdf
    • https://cdn.shopify.com/s/files/1/0432/1574/9281/files/79704287889.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/how_to_keep_sketch_trial_working.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/64143599652.pdf
    • https://cdn.shopify.com/s/files/1/0432/2030/4034/files/fasugogagopedumezigo.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_off00005e7f.bin
58dd82423eeb2464277644872cfcbe236c716851e05dcdae24acdbe971f48c27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7F 5108 bytes
font_01_sfnt_off00006fb8.bin
26b088d1049bf4a2c4ff30a024afe4cf053acaca45ecd2a6a2501c00ecd65844		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB8 10732 bytes

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