Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee9d0cdc13405db…

MALICIOUS

PDF

77.1 KB Created: 2020-08-06 08:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41a8bfcc040d943a277676d382c83041 SHA-1: b68caa56418b4a60052354a48bd10fddf4cc78f2 SHA-256: 4ee9d0cdc13405dbcb39b080cee439fea9628381bfc34a6e6a75b2347f91b098
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, which is characteristic of a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, suggesting the document's purpose is to drive traffic to this malicious site.

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.ru/pify?keyword=english+amharic+phrases+pdf
    • http://files.phshalloffame.com/uploads/1/3/0/7/130775551/5b23c939685.pdf
    • http://files.twohugos.com/uploads/1/3/0/7/130738993/3e447d2c1b5e91.pdf
    • http://files.iowabackyardfarmer.org/uploads/1/3/0/8/130874567/govufobarilugetes.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2510/files/calculus_by_howard_anton.pdf
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/kagupilejesafunox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdf
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/77813929166.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/74416708952.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/95288516356.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6697/files/aeromedical_training_for_flight_personnel.pdf
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/nexus_2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0434/3988/2402/files/remugurobagu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006de9.bin
84a666d6676b48d7fd7610b8ff698b78749ad988164d1f5652aa7d1b4f19518b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE9 48068 bytes
font_01_sfnt_off0000ea15.bin
03cb5237b7b378a6998667653fd080ea066a5132b5266bf3c3899bdc57df3536		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA15 5524 bytes
font_02_sfnt_off0000fcbb.bin
28446bb896ac4751c32aadb0f37b142cbfaa00b4d6af2cb00df8aa62d6be2684		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCBB 13952 bytes

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