Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb65d37cca0929d…

MALICIOUS

PDF

37.4 KB Created: 2020-08-05 05:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4535130ac57c463d9d42d214fff78c38 SHA-1: d7b1c3d420011ed493dbdda5e0ea0392fe7101d4 SHA-256: 7cb65d37cca0929decc216ef14923f574827cc8a9fda561e8dc1428eda7d7659
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a lure to disguise the malicious redirect. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=jurnal+morfologi+caesalpinia+pulcherrima+pdf
    • http://files.jmn-i.com/uploads/1/3/0/8/130814642/badegumun-vafadivo.pdf
    • http://files.cairnsgolfcarts.com/uploads/1/3/1/4/131438137/pirebafapuzomu-kikuvasexito-pugirejegejuwad.pdf
    • http://files.quasilocum.com/uploads/1/3/1/3/131380733/dazepip-tefifipipewesex.pdf
    • http://files.janellrhiannon.com/uploads/1/3/0/8/130874110/1116388.pdf
    • http://files.carrouselmuseum.net/uploads/1/3/0/8/130873783/60fa124116.pdf
    • https://cdn.shopify.com/s/files/1/0434/5895/3381/files/spreader_beam_design.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/15545221710.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7741/files/fakosevodanowejumorok.pdf
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/sijopoxezuno.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6324/files/pemizafukaminajigolulapo.pdf
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/69423492804.pdf
    • https://cdn.shopify.com/s/files/1/0433/3581/1231/files/zawozidi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/85510853161.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2661/files/judimobabiwaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/2725/0850/files/48072877376.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1334/files/loruj.pdf
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/jofakoximoxuvezaxivid.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/woxisimakuzitid.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_off00005475.bin
5c19088753413fe6ce3ef3195c81dcf4cf9a346518ac99d803266a3e33a8c625
pdf-font-stream PDF embedded font (sfnt) at offset 0x5475 5556 bytes
font_01_sfnt_off00006730.bin
aed76086f2bbd14992a7a5151af82acf571c1a3bbaadd701bce54947d35d1009
pdf-font-stream PDF embedded font (sfnt) at offset 0x6730 9704 bytes