Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5ff76a6a7111d0b…

MALICIOUS

PDF

43.7 KB Created: 2020-08-06 08:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ed07f2c27931015df46eb71a2725594 SHA-1: abef9143d021ccd8c508d8e2757fbdf04f8c1376 SHA-256: f5ff76a6a7111d0bf30f49776de7d2e33b716d24fbce59eb2cbe890b6347eb18
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=simply+keto+cookbook+pdf'. This link is presented within the document body, disguised as a cookbook PDF, to entice users to click. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious destination. No scripts were extracted from this sample.

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=simply+keto+cookbook+pdf
    • http://files.purduedphil.com/uploads/1/3/2/6/132682585/1893050.pdf
    • http://files.ihmcenterforliteracy.com/uploads/1/3/1/3/131380786/4941664.pdf
    • http://jipepode.eogandcysyoga.com/uploads/1/3/0/7/130776326/gusewanagizevomod.pdf
    • https://cdn.shopify.com/s/files/1/0440/3865/2069/files/rangitaranga_full_movie_with_english_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71409998288.pdf
    • https://cdn.shopify.com/s/files/1/0450/4177/8838/files/advanced_calculus_for_applications_hildebrand.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0365/files/finanapejomogumibabinut.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/41206421032.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4577/files/1760231346.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tikifulodu.pdf
    • https://cdn.shopify.com/s/files/1/0445/4265/6671/files/ap_calculus_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/77262708933.pdf
    • https://cdn.shopify.com/s/files/1/0433/9721/8458/files/27040543120.pdf
    • https://cdn.shopify.com/s/files/1/0430/0419/9075/files/algorithm_program.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_off00006c0c.bin
d6a959d9a148c4f36a38befa522c4673593f40d0723aefc4e41a2166918dbcd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0C 5224 bytes
font_01_sfnt_off00007dd3.bin
d26ce4b6d3d27e8a81ccaaf16279ea88e580bb0a242f4ecbfc2be8b4a8f65253		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD3 10752 bytes

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