Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f786a1763b8cc8…

MALICIOUS

PDF

59.9 KB Created: 2020-08-05 01:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 593b823fe544792ca48f5bbcad85e64a SHA-1: aacdd770c283563bba9a26d249931859b49b95fd SHA-256: 56f786a1763b8cc83e8e3b91ac44c4eebccd29756a8d545890bdfd4f0ae5279e
120 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a malicious redirector and part of a link farm, aiming to direct users to malicious infrastructure. The primary malicious URL identified is ttraff.ru, which is used in conjunction with financial keywords to entice clicks. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or redirection attack.

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=depreciacion+amortizacion+y+agotamiento+pdf
    • http://files.f5innovationsymposium.com/uploads/1/3/1/0/131070588/papusa-xubusofa-riruvibonepo.pdf
    • http://magulam.adrianpeterson3.com/uploads/1/3/1/6/131606490/9e82de3.pdf
    • http://files.hiebar.com/uploads/1/3/1/6/131637668/sodakozazafeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/2368/7067/files/93988522934.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/54624163214.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/the_imposters_handbook_rob_conery.pdf
    • https://cdn.shopify.com/s/files/1/0439/1924/5467/files/26068613164.pdf
    • https://cdn.shopify.com/s/files/1/0432/9956/9829/files/wanuge.pdf
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/simple_english_grammar_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/2093/5590/files/borozewolajibinafapo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/gebiwedupawatape.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/gumidun.pdf
    • https://cdn.shopify.com/s/files/1/0433/6317/2502/files/vizio_direct_tv_remote_code.pdf
    • https://cdn.shopify.com/s/files/1/0432/5425/1670/files/sopozubeludivowixu.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_off0000a988.bin
f6d43db602e4bdc5df68ab704030079068c5d520719d2da35d99dee581554f55		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA988 5416 bytes
font_01_sfnt_off0000bbfa.bin
20a0a75f2fcbf4608fd4c2697dcf4a5f265878d643d83e09a287c318b11908fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBFA 11284 bytes

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