Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d0d50104f84cbad…

MALICIOUS

PDF

40.2 KB Created: 2020-09-01 11:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 798225cdda32d64b244452b3036fd324 SHA-1: fcc445cceb7df18135c2792d3c6cbc77e15f422b SHA-256: 4d0d50104f84cbad1257f3145335d932caca0d5e6cec1020339caa4b67d3ed7c
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=short+formal+dresses+for+homecoming, which is likely the malicious redirector. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to disguise the malicious intent. The primary attack vector appears to be social engineering through a deceptive link.

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=short+formal+dresses+for+homecoming
    • https://cdn.shopify.com/s/files/1/0461/8158/0953/files/one_piece_stampede_streaming.pdf
    • https://cdn.shopify.com/s/files/1/0430/6911/2474/files/radford_syntactic_theory_and_the_structure_of_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/12605653198.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/96978046346.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/xogunapanidiwagotifem.pdf
    • https://static.usrfiles.com/ugd/b8c837_c4e7399ef10f49729aac82d6bcbcfe2c.pdf
    • https://static.usrfiles.com/ugd/9ea91e_f3c1b487f3fc4bd9a1cfedff5e15942a.pdf
    • https://cdn.shopify.com/s/files/1/0440/5267/6773/files/52017408652.pdf
    • https://cdn.shopify.com/s/files/1/0460/5791/4523/files/naxikijugiwutizaluku.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/lejiluvurazewobetunamifi.pdf
    • https://static.usrfiles.com/ugd/b8c837_80af681399124cbe9b894ce3f21d82c8.pdf
    • https://static.usrfiles.com/ugd/cfa91a_e25dcb897dac4264a8005d9ec02a2682.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e1ecfd8a23547dbbe145f2aad271d81.pdf
    • https://static.usrfiles.com/ugd/8a419d_62ee1ebf87d142b7b9d904a28727c3fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_a817384f4a3c4bf39c1c9ee3421b6721.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_off00005d6c.bin
d0caf4d15999568df579dc8293b50baeb906d7c3b4199c526017a14068a8ed8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6C 5540 bytes
font_01_sfnt_off00007013.bin
c5c607515826bab4a8b0ad90a749cb32f2e57e069b50d77838542f9ffcfc9ee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 10368 bytes

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