Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3443458d9a7d83e…

MALICIOUS

PDF

36.7 KB Created: 2020-08-31 02:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77a2f6ad7a261560888b436ea1d62896 SHA-1: 45bb5591f837466245e345c91cca83a5ebc77ce7 SHA-256: f3443458d9a7d83e1136083e7175ec57633f96b87b8c31c33adc7c7aeedaa74e
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link pointing to a known malicious redirector. The document body and embedded links are designed to appear relevant to the keyword 'new holland 268 baler parts', likely as a lure. The redirector URL is the highest priority IOC, as it is the initial point of contact for the malicious payload.

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/wix?keyword=new+holland+268+baler+parts
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/convert_to_word_acrobat_9.pdf
    • https://cdn.shopify.com/s/files/1/0437/9521/8594/files/alejandra_pizarnik_libros.pdf
    • https://cdn.shopify.com/s/files/1/0431/7852/4831/files/heathkit_hw-_101.pdf
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/funariveliteju.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8847/files/xadoregikugenubefolez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/sajilagugupesufusedumex.pdf
    • https://static.usrfiles.com/ugd/79cb75_55b5b01f37ee49c7a8a977e61e401408.pdf
    • https://static.usrfiles.com/ugd/c6ac46_f654627eb7aa4b75adadae13a8728cd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4988329c7404ffa87ceea3411f0b592.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/logonunimoloj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0346/9206/files/53802514604.pdf
    • https://cdn.shopify.com/s/files/1/0435/5263/7091/files/hp_8610_manual.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_off0000517f.bin
68d66b60e43d970f5e78c20c08b61bb2216eaae76aed0d503366a20077a57bd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x517F 5728 bytes
font_01_sfnt_off000064ff.bin
78e8fc316da4ebe4e7293b4bbb53591800db6d878a80bc96ee45d2a215123e9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64FF 9832 bytes

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