Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8f0654b6b8bec5…

MALICIOUS

PDF

39.1 KB Created: 2020-08-17 18:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97b2dda93d3a1be8bdb94a87cefda754 SHA-1: 038c96208b3b6869fc1cb4dd9ed7d103ca703876 SHA-256: ad8f0654b6b8bec5e9591f734b6d38e8205810b87682f29aca4e2ac6e8f21377
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a large number of external links, a common tactic for SEO manipulation or to host malicious content. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=big+ganga+tv+show', is identified as a malicious redirector. The document body contains garbled text along with the redirector URL, suggesting an attempt to obscure the malicious intent. No scripts were extracted, and the primary malicious activity appears to be link-based redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=big+ganga+tv+show
    • http://files.gatheringofghouls.com/uploads/1/3/1/1/131164479/2b08d3f8345b.pdf
    • https://cdn.shopify.com/s/files/1/0432/9704/6696/files/pupabu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/vejidikexenoka.pdf
    • https://cdn.shopify.com/s/files/1/0441/1083/9960/files/beginner_placement_test_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/41427712569.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/30086846293.pdf
    • https://cdn.shopify.com/s/files/1/0432/9606/3652/files/xokonarunaxusapuwunuliked.pdf
    • https://cdn.shopify.com/s/files/1/0431/5732/3925/files/77116960404.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/646255477.pdf
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/29620676436.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/18144749499.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/mope_io_sandbox.pdf
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/is_crack_cheaper_than_coke.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_off00005308.bin
492e71bd5a8492b4669fe2ad0a2d58b445423517b9739cb97e8d27ab985871c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5308 5020 bytes
font_01_sfnt_off00006436.bin
dac699dbe972e4d518d22138618ca6a8dbdcbd984ed171df142a84a54a76dd1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6436 9784 bytes
font_02_sfnt_off000085f7.bin
f5497358f0cd13d325b681ff7d72eecbbc360831091dc1b72673f80523438a48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85F7 2368 bytes

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