Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89da0930ef468e3…

MALICIOUS

PDF

42.4 KB Created: 2020-08-31 22:35:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cedae24c77c49ea81fede9302db0780 SHA-1: ee442f433c8d1dc32d5ce353ea2df4a2fc343abc SHA-256: c89da0930ef468e36fac788e612b56821fa677f088b5c4d3ad71c988f4fa5fa7
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.com/pify?keyword=apache+helicopter+pc+game', is designed to lure users into downloading potentially malicious content by masquerading as a game download. The document body, though heavily obfuscated, contains references to this lure and the redirector URL.

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=apache+helicopter+pc+game
    • https://static.usrfiles.com/ugd/89363e_7756ef6043c44711b0ed68dd1b7ed1a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_7eb3b761f4bc4c63a7b68daa12bf7d5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_574a705aa07d4f799105fe34f2ab17ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_a3c08eb955144c8db5f945b6b21c1cf0.pdf
    • https://static.usrfiles.com/ugd/a91264_ac887dec1a7b467db043f9d29cc67e79.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/36783508817.pdf
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/riwixul.pdf
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/comite_du_gard_petanque.pdf
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/subefodafafulexobekifelaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/indeterminate_forms_worksheet_with_solutions.pdf
    • https://static.usrfiles.com/ugd/b8c837_fd0ce4da3a354f04baf23d742bfe07a9.pdf
    • https://static.usrfiles.com/ugd/0511f5_2a23df5a10d647649120178a45e75eaa.pdf
    • https://static.usrfiles.com/ugd/451461_cfcfcf835cfd4bd29c57c5651abeb21a.pdf
    • https://static.usrfiles.com/ugd/01e791_e83873c972d24ce7aaf10c5df40bc4b4.pdf
    • https://static.usrfiles.com/ugd/73c254_aa5d2e4368124f04bc06887edf2d52a0.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_off000069db.bin
fa9b4dde7ecb78e35fafcf5a51bf3966d28d7db5c3a01a803bd7d20d9226fa21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69DB 5160 bytes
font_01_sfnt_off00007b3e.bin
18142746f1b052815dd75f5511e861555eaf39829f0d00bdc18edf6071d534d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3E 9848 bytes

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