Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f8c64c3995acea2…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 17:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86b0ca77b93acef3d60366c94aa242ec SHA-1: 1999bc8282f92c51c11404cff71d8b27f7718af9 SHA-256: 1f8c64c3995acea2d0d380a3c591f7b30329572f398452348f55f1849abddb19
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.com/pify?keyword=glacial+acetic+acid+msds+pdf'. The document body, though heavily obfuscated, contains text related to 'glacial acetic acid msds pdf', suggesting a lure to trick users into clicking the malicious link. The presence of a large number of external PDF links also indicates a link farm SEO tactic.

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=glacial+acetic+acid+msds+pdf
    • http://files.sandersinkstudio.com/uploads/1/3/1/1/131164399/9798423.pdf
    • http://files.natureswayhealthfoods.com/uploads/1/3/0/7/130739614/dilulenopopukodax.pdf
    • http://files.madysonkennedy.com/uploads/1/3/2/3/132303286/sunumite.pdf
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/28559545777.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/fezinugafoxejukonimajav.pdf
    • https://cdn.shopify.com/s/files/1/0448/0414/5309/files/misery_penguin_readers_level_6.pdf
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/65865855308.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/nemogejodavorowaze.pdf
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/zonusagobonaraj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/xogigex.pdf
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/80839775353.pdf
    • https://cdn.shopify.com/s/files/1/0437/6212/2903/files/calculus_9th_edition_larson.pdf
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/que_es_el_acoso_escolar_o_bullying.pdf
    • https://cdn.shopify.com/s/files/1/0431/6194/4228/files/75594375748.pdf
    • https://cdn.shopify.com/s/files/1/0434/1743/6312/files/pabutezaboginuz.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_off0000627d.bin
2d6e6c4ffdcf7bf4c9702ab0b1c8fb469914add54fa5a7ee6a49c64a535480ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627D 5236 bytes
font_01_sfnt_off00007446.bin
c41ab92ad285860d8971162a85d2869717898cc40b080f4fcafe171724d4816e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7446 10412 bytes

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