Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f4d30bbf389c7a5…

MALICIOUS

PDF

39.6 KB Created: 2020-09-10 22:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02a91ac6238e2b9e05db2233a6a8d520 SHA-1: 8b1edb60f4f3f2b9a5fc86af8234605a46b2afee SHA-256: 4f4d30bbf389c7a53735ecb30e04fc8d22838a9b70aac045e08c1a4c5c3be9a5
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, includes the URL 'https://ttraff.club/wix?keyword=cadent+gas+annual+report+2016', suggesting a lure to a malicious site disguised as a report. The presence of a large number of external PDF links further indicates a link farm or redirection strategy.

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.club/wix?keyword=cadent+gas+annual+report+2016
    • http://saluge.rubbermonsters.com/uploads/1/3/2/6/132695663/vakajamexedadopafezu.pdf
    • http://files.eic-llc.com/uploads/1/3/1/4/131437513/6234631.pdf
    • http://towebet.stoneofhopeyouth.org/uploads/1/3/1/4/131409236/2c949748ced5e.pdf
    • https://static.usrfiles.com/ugd/81d6a4_9822fbb3685446498765f37bcebc769d.pdf
    • https://static.usrfiles.com/ugd/ace02d_b710c629abee4e3c8813f44a6c6104ff.pdf
    • https://static.usrfiles.com/ugd/fa6f14_6aa780e5af164af78610a68939b52d44.pdf
    • https://static.usrfiles.com/ugd/bf650e_ced4fb95d154497382f58aab9b9b56a2.pdf
    • https://static.usrfiles.com/ugd/97368a_a7eda392ff264cb4b2d89609a20b2c68.pdf
    • https://cdn.shopify.com/s/files/1/0439/2864/9896/files/allah_ke_bande_hasde_pk_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/8899/2674/files/anaphylaxis_guideline_pediatric_thai.pdf
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/24356095971.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/saxopusupaxasoposuvesaz.pdf
    • https://static.usrfiles.com/ugd/f6336d_f5fc176895ee4068915e2f0b4058643c.pdf
    • https://static.usrfiles.com/ugd/9b33c5_9cd265f0211d4caaaba36899e91664ca.pdf
    • https://static.usrfiles.com/ugd/2e16aa_39e8557ea7374761935453b0e1f392e7.pdf
    • https://static.usrfiles.com/ugd/ade4e6_d43fb1d49df74a0d979a37d7fd83ce59.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_off00005b81.bin
9a2572c7575d7626db744569b6d227130c3332f48140df072cca2ed9937bdeb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B81 5512 bytes
font_01_sfnt_off00006e4e.bin
75f22065d596f437588e753212c86445c914416dcd60671bb0753f6ec2f31e0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4E 10208 bytes

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