Malicious PDF — malware analysis report

Static analysis result for SHA-256 a99edbe1bcd9a18d…

MALICIOUS

PDF

43.3 KB Created: 2020-08-16 23:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89ec35615480499cef66f46fa404d822 SHA-1: 298f649fcd9f489aae6cb820478e4caad65627c0 SHA-256: a99edbe1bcd9a18d37a029c1f55685e6a694bd6c88e1fefc8addbf7e895b3be4
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one prominently featuring a keyword related to 'lending money to family contract template uk'. This link directs to a known malicious redirector. The file also exhibits characteristics of a link farm, with numerous external PDF links. No scripts were extracted, but the primary attack vector appears to be social engineering through deceptive document content and malicious URLs.

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=lending+money+to+family+contract+template+uk
    • http://xofogelu.prowashmyrtlebeach.com/uploads/1/3/0/7/130740572/7835503.pdf
    • http://files.aatgwa.com/uploads/1/3/1/3/131380107/madukowuretiv.pdf
    • http://files.parkcityspayoga.com/uploads/1/3/0/7/130739116/50067a71.pdf
    • http://zovozo.annblackburnpoetry.com/uploads/1/3/2/8/132814930/somevokedowedub-gozige.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kumug.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/jawoxewax.pdf
    • https://cdn.shopify.com/s/files/1/0436/7518/9401/files/cbest_reading_practice_test.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/28215451927.pdf
    • https://cdn.shopify.com/s/files/1/0430/0914/7043/files/sedibarujepik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/87958560418.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8285/files/nudilinadadifajavew.pdf
    • https://cdn.shopify.com/s/files/1/0445/1778/5759/files/alphabet_letters_with_pictures_printable.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/bujiwexuninijazelajetekud.pdf
    • https://cdn.shopify.com/s/files/1/0430/0380/5847/files/92486155178.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_off000069a9.bin
9f5d33f2f83e4b67d1362ba8c6761ddfce3ebf6f2389e20d2b5dbf890023c7aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69A9 5404 bytes
font_01_sfnt_off00007c01.bin
00c47e2e204e81f57059a36f991e6babd3cdc2954e78e2cca825f7d788d3f665		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C01 10472 bytes

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