Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b1887d2ffa0dd69…

MALICIOUS

PDF

35.2 KB Created: 2020-07-10 22:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76bef9c17260bc71c4a230e43b429055 SHA-1: 37900d9504dbaece9cd416d024c10408203857ea SHA-256: 7b1887d2ffa0dd69de44a9664d4e82495da02dda87b6aa21d8756d57f5f02466
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a critical heuristic firing indicating it's a malicious redirector link, pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links to other PDFs hosted on various domains. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic, suggesting the primary intent is to lure the user to click on this link, likely leading to a malicious download or phishing page.

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=mercedes+a+class+saloon+brochure+pdf
    • http://files.globalisationandcities.com/uploads/1/3/1/6/131607174/jilaxafufusekiw.pdf
    • http://files.ericeklecoaching.com/uploads/1/3/2/3/132303007/8581095.pdf
    • http://files.kitchen2boardroom.com/uploads/1/3/1/3/131380875/6547407.pdf
    • http://files.tukteacompany.com/uploads/1/3/1/4/131411539/4526419.pdf
    • http://files.credorecoveryministry.org/uploads/1/3/1/1/131164204/vitefadimivu.pdf
    • http://files.goldentreasureretrievers.com/uploads/1/3/1/3/131398252/2918990.pdf
    • http://files.subtek-music.com/uploads/1/3/1/8/131858975/7337809.pdf
    • http://files.contemporary-flair.com/uploads/1/3/2/3/132302998/vakinuw.pdf
    • http://files.tinagutierrezartsphotography.com/uploads/1/3/0/7/130775383/remax-taxopugazaledu-fuluxibejurifuj-lavosiraleset.pdf
    • https://borakav.files.wordpress.com/2020/06/31856906881.pdf
    • https://kugedabi.files.wordpress.com/2020/07/kakerazedoxomelido.pdf
    • https://nijopudu.files.wordpress.com/2020/07/36473774204.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/tanovumobu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jisabisagubimebusogapasof.pdf
    • https://cdn.shopify.com/s/files/1/0430/6190/3517/files/48972441115.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/74662378065.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_off00004dd8.bin
ec8ac7867bbece8ffc29fd753198809baccc5c003915ce781825c9911742f843
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD8 5140 bytes
font_01_sfnt_off00005f3c.bin
8b87f306d62055b88d2e91fcce8abd995ff5e179ba164543e391319588be6a49
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F3C 9576 bytes