Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89e3a31e8e64903…

MALICIOUS

PDF

55.7 KB Created: 2020-08-03 08:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 630e2a6399c25f6daaad194659ca8d99 SHA-1: eab4a37f70d975cca6a60e0da9d7ed9eb631a5be SHA-256: e89e3a31e8e649030e4a5b946a6d818277d5d8ceb3756d4dd77a463990a54b3b
120 Risk Score

Malware Insights

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

The PDF file exhibits malicious behavior through a large number of embedded external links, identified as a PDF SEO link farm. One of these links, 'https://ttraff.ru/pify?keyword=opnavinst+3500.+39+c', is flagged as a known malicious redirector. The document body contains garbled text but includes the same suspicious URL and several other Shopify-hosted PDF links, suggesting a coordinated effort to manipulate search results or distribute further malicious 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=opnavinst+3500.+39+c
    • http://files.stuffsarahsays.com/uploads/1/3/0/7/130776393/zunasivov-genumojufebasak.pdf
    • http://files.drorangejuicer.com/uploads/1/3/1/8/131871907/zimibawekapes-furoluviri-zumewosuxotigin.pdf
    • http://files.patriciabjorklund.com/uploads/1/3/1/4/131438245/kudin_gofiwuwevagug_fozotukaloro_lafonutaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niroduwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/29077566712.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/jideniv.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/panuwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/dum_dum_girls_coming_down.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/fexatijarinubi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gekubamunanapomokavonata.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/dezisixarok.pdf
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/gulimafurizixilip.pdf
    • https://cdn.shopify.com/s/files/1/0432/6703/1200/files/67948676205.pdf
    • https://cdn.shopify.com/s/files/1/0431/2452/3169/files/10143273454.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_off00009c56.bin
29f3cbcaec618660303182aac1e3560ba6212e9b8ff435e60dcf48ad42cbd431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C56 5504 bytes
font_01_sfnt_off0000af29.bin
e0163d3399cabfcdd70ccf5ff41f0ce9ced14867f7ccd61a596f45e2b919a3ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF29 10376 bytes

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