Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca45477817fe0e5…

MALICIOUS

PDF

43.4 KB Created: 2020-09-01 02:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86ec95702cc680cb2f02b9b9af760d7b SHA-1: a6d2acb394ea6d366e3630749d6cfaa9c32b9fb2 SHA-256: bca45477817fe0e5e33461d53c40d465432b2c11a7f385498bc58789e1e29fab
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=atlantic+starr+sheet+music', is flagged as a malicious redirector. The document body contains garbled text but includes the malicious URL, suggesting a lure to a site that likely hosts further malicious content or phishing attempts.

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/wix?keyword=atlantic+starr+sheet+music
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/97014029129.pdf
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/17549523903.pdf
    • https://cdn.shopify.com/s/files/1/0428/6762/2055/files/fizixotumawuwarididin.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/24934538581.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/roxiwidazedenowudo.pdf
    • https://cdn.shopify.com/s/files/1/0464/6495/8616/files/zojaruledetuzixejeju.pdf
    • https://static.usrfiles.com/ugd/b8c837_d08a0134108a41e787762ba4e8b11739.pdf
    • https://static.usrfiles.com/ugd/fafc38_96755a4d81f84cb1b0cc2a1751bd4a86.pdf
    • https://static.usrfiles.com/ugd/f515ca_a525bf12e49f4892b943e4b1c9c28143.pdf
    • https://static.usrfiles.com/ugd/b8c837_73bd2cffd2074b3da95b4760d81bd000.pdf
    • https://static.usrfiles.com/ugd/b8c837_ea19dab91f524c33acff764eb68a8f19.pdf
    • https://static.usrfiles.com/ugd/5b9a87_730307427d3a435b8f86ad2a0412b67e.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_off00006d51.bin
9d4d14f59cc04bebcb31d25fb93325afc714044c0f15ab9f49e70615a974bbd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D51 5028 bytes
font_01_sfnt_off00007e3c.bin
7f7f1e9cda40718fef24fac2b178779bec747aa6f95419609775ebafd5d74301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3C 10148 bytes

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