Malicious PDF — malware analysis report

Static analysis result for SHA-256 c14eb936d7322991…

MALICIOUS

PDF

42.4 KB Created: 2020-08-20 11:08:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62fb16fa0e7fee54a1ae00239a8a9d70 SHA-1: f0b721e32e56af468a31647c6fff14a7b07ea2dc SHA-256: c14eb936d732299106b8754ebe9a36afff808443f6c49c6fb50505844bd072f2
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, which points to 'https://ttraff.cc/pify?keyword=julius+k9+idc+harness+size+guide'. This URL is presented within the document body, disguised as a 'Julius k9 idc harness size guide'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. The primary malicious IOC is the redirector URL.

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.cc/pify?keyword=julius+k9+idc+harness+size+guide
    • http://files.moonwaterdojo.com/uploads/1/3/1/3/131384429/nukinox_kusotidute_wujasekex.pdf
    • http://kemaw.enduringpress.com/uploads/1/3/1/6/131637136/lowokurebafazul-tegaligi-vuvovodox.pdf
    • http://files.mortgagepolicymanual.com/uploads/1/3/0/7/130776447/kepim.pdf
    • http://borenaxu.asb-expan.com/uploads/1/3/2/6/132681464/vilelowunepodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/45104317428.pdf
    • https://cdn.shopify.com/s/files/1/0431/6626/9597/files/android_secret_code_list.pdf
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/alumina_processing_properties_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/fujukajeja.pdf
    • https://cdn.shopify.com/s/files/1/0445/4429/5076/files/br_ambedkar_biography.pdf
    • https://cdn.shopify.com/s/files/1/0429/2182/0326/files/35107958668.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3382/files/desktop_media_query.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_off000065dc.bin
083583663086c0e1a58f7b51e45c45d56e9965d40cd5fbed9942cd748b6b330c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65DC 5460 bytes
font_01_sfnt_off00007860.bin
c03459d288cbe1f685d09e879dd856ee946fca33a354729f23ea606b26e55f3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7860 10376 bytes

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