Malicious PDF — malware analysis report

Static analysis result for SHA-256 b40c6170fc43200e…

MALICIOUS

PDF

59.6 KB Created: 2020-08-20 11:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bba781c9cebe79f7eff04254acb2d4c SHA-1: d7ef2b4c3144ad7971d12cd481c3b4399072c0a2 SHA-256: b40c6170fc43200e1ee39e2483216ee2f4ac7ba750f56684ea6c85bb16d565b3
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with the primary heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'performance' and the malicious URL. The file's purpose appears to be to lure users to the ttraff.ru domain, which is flagged as a malicious redirector, likely as part of a phishing or scam campaign.

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=ef+asnotracking+performance
    • http://files.2girlsandabook.com/uploads/1/3/1/8/131857315/rezutiruboxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/sujets_brevet_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/3509/7245/files/2901993167.pdf
    • https://cdn.shopify.com/s/files/1/0435/3464/7460/files/pofanovajewixitida.pdf
    • https://cdn.shopify.com/s/files/1/0434/4388/0103/files/nerokawiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/8517/6736/files/6140958903.pdf
    • https://cdn.shopify.com/s/files/1/0428/9540/9311/files/45365060097.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2822/files/nonparametric_statistical_methods.pdf
    • https://cdn.shopify.com/s/files/1/0433/7496/8986/files/grasa_corporal_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2805/files/kujinajuba.pdf
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/vaginobudesarawurad.pdf
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/d_d_5e_pregenerated_character_sheet_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/97871118446.pdf
    • https://cdn.shopify.com/s/files/1/0433/6248/4383/files/answered_prayers_danielle_steel.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a16.bin
0db835ff59e7eaae9109f378ab0d7dc1d5b92a4ace3f94ceeb6481b400c9e379
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A16 5112 bytes
font_01_sfnt_off00008b63.bin
7dfa968b7154fd56a37f113709961f6d43104d10cb89d458590069bb0755a7f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B63 15644 bytes
font_02_sfnt_off0000bcf3.bin
71fe66e8a900eabe62c773f6b9b467243c87e6d484dd0ea34a22194082714177
pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF3 16660 bytes
font_03_sfnt_off0000d326.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xD326 4324 bytes