Malicious PDF — malware analysis report

Static analysis result for SHA-256 9557cfc2a424d8c8…

MALICIOUS

PDF

42.9 KB Created: 2020-08-22 08:39:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66aff1d6b7afcf6bf632bc1a49a26a12 SHA-1: aa9cf14c94846cab1811269e5e9932019e2c5f9c SHA-256: 9557cfc2a424d8c8acd11b9001f4c237a8554bec0027e776ce6d61f62001648f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Albion online fishing guide' and the malicious URL. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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=albion+online+fishing+guide
    • http://getolefi.lifestreamfamilywellness.com/uploads/1/3/1/4/131437709/d94cd82c7841e.pdf
    • http://files.wildemberstudio.com/uploads/1/3/1/8/131871614/novesuredi.pdf
    • http://files.kristalynshefveland.com/uploads/1/3/0/7/130776054/7093362.pdf
    • http://womixani.purrkur.com/uploads/1/3/1/3/131384605/60681897980b.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6566/files/37721060359.pdf
    • https://cdn.shopify.com/s/files/1/0438/8447/8632/files/amelie_comptine_d_un_autre_t_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5671/files/gad_anxiety_test.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8973/files/rurososazujivezomofadu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/jobab.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/napadazafabixuxosizexumi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8626/6016/files/85346064269.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/71066727482.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/94485032007.pdf
    • https://cdn.shopify.com/s/files/1/0432/2767/6829/files/menexedafetet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5817/5908/files/pijujunotadarakaviw.pdf
    • https://cdn.shopify.com/s/files/1/0435/9333/4952/files/carbonium_ion.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_off000069f5.bin
0cca3ced78bed27ee61f14108f1036ea9def86165561b34be86d4b13849e9398		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69F5 4992 bytes
font_01_sfnt_off00007ae6.bin
cf2329015dfa3d335f0a8bf32d9471509fcfa33fb5df59bdd259663eff0d4bd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE6 10528 bytes

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