Malicious PDF — malware analysis report

Static analysis result for SHA-256 2539cf4434c7e3c0…

MALICIOUS

PDF

42.1 KB Created: 2020-08-20 00:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4356a45fc8a67d1b01dff260bacbcbaa SHA-1: 9587561b6f9487cb4e73a751ad242db3039631ee SHA-256: 2539cf4434c7e3c06f399f0e6391bfeffe2595458984197460efa594322c7858
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to obscure malicious destinations. One of the primary links, 'https://ttraff.com/pify?keyword=china+gate+3gp+movie+free', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'China gate 3gp movie free', suggesting a lure to entice users to click the malicious link. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing 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.com/pify?keyword=china+gate+3gp+movie+free
    • http://files.thepescenius.com/uploads/1/3/1/0/131070302/bimamoxexaz-nagojax-fulutok-rarigewesip.pdf
    • http://rijof.mrslorenzscience.com/uploads/1/3/1/1/131164250/1341566.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/momunugesoliviz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdf
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/58522491177.pdf
    • https://cdn.shopify.com/s/files/1/0432/7473/1685/files/39311299960.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovovowegafakaroseras.pdf
    • https://cdn.shopify.com/s/files/1/0437/9279/3757/files/fabajiwedu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3041/3475/files/lubekubegulodobapixo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1054/7099/files/rodoxebetenajufemadotil.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050c3.bin
01c839e2c980c3ad55a40840f507ccdc69a9a1d3a3d5d6b16dc21bc8cf92ba12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50C3 5236 bytes
font_01_sfnt_off00006277.bin
0afabde26cab61218a72458edd9851a3129432735b933b904843c6c01ed40100		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 10512 bytes
font_02_sfnt_off000086b1.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86B1 16164 bytes

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