Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefe3498025a2d9b…

MALICIOUS

PDF

46.7 KB Created: 2020-09-12 01:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8271834de521b3d2e3256d7ae58f7556 SHA-1: dfb02b24e617feb0d570e6ac316d1f17d6a0478f SHA-256: fefe3498025a2d9b68b65f47ff36f125898ed2409542db2d32eb73804083d786
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which are part of a link farm strategy, with a notable portion pointing to Shopify-hosted PDFs. One critical heuristic identified a link to a known malicious redirector at 'ttraff.club', which is likely the primary malicious payload delivery mechanism. The document body itself contains obfuscated text and a URL that mirrors the malicious redirector, suggesting an attempt to lure users to 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.club/wix?keyword=teachers+guide+science+8+digestive+system
    • http://files.salondiversions.com/uploads/1/3/2/6/132681201/11eb9746d2eb6.pdf
    • http://files.stmarymagdalenelangridge.com/uploads/1/3/0/7/130738823/lutajepiwinug.pdf
    • https://cdn.shopify.com/s/files/1/0437/7581/9927/files/kituji.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/niveribe.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/64114648250.pdf
    • https://cdn.shopify.com/s/files/1/0431/4500/3169/files/nilibimubobage.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/fahrenheit_451_graphic_novel.pdf
    • https://cdn.shopify.com/s/files/1/0440/8557/5832/files/11678514303.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdf
    • https://cdn.shopify.com/s/files/1/0472/3313/8853/files/sims_3_wedding_arch.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_off000078a8.bin
0997cf069facc0b812022ca3abb8e96f8f1cd9c45798b6f9d995afc4b39c8273		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A8 5624 bytes
font_01_sfnt_off00008baa.bin
3263c237a53d2949580573099af865b6ad2a49803d6ca0cc2b6efd4b43021b49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAA 10120 bytes

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