Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f1c482dde1648fc…

MALICIOUS

PDF

39.8 KB Created: 2020-08-09 11:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 894057c074dbec09c9cc958c23f4e834 SHA-1: 62efe00f23e72869d2cd12fc7ec1b282540e126f SHA-256: 1f1c482dde1648fcabb94e4fcab317f6c0d80ca51de5794a87b60afa48a6f666
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used to redirect users to malicious websites. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.com), and another flagged a 'link farm' of external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to 'agribusiness management' and the URL that triggered the malicious redirector heuristic, suggesting a lure to trick users into clicking on potentially harmful links.

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=introduction+to+agribusiness+management+pdf
    • http://files.catcatblog.com/uploads/1/3/1/4/131452878/129315c.pdf
    • http://sovuwu.obriennewsservice.com/uploads/1/3/2/8/132814930/1764786.pdf
    • http://befiretum.learningislifelong.us/uploads/1/3/1/4/131452883/5011038.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6235/files/peletokixu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1220/9315/files/30_days_abs_challenge.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/jekif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31321710084.pdf
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/rafaxeradum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/vipafasezubatiwat.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/fulimikipanoxilafe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5720/9766/files/free_printable_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0439/3733/3406/files/92309458761.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_off00005c4a.bin
b231315ce27fd9a52c9775b53cff3f44978978d0b6af3e5a20b0d1cc9655fdee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4A 5520 bytes
font_01_sfnt_off00006eed.bin
5f310ae2f403381165015546988bb4363430cbd3512b1f456b75c976e1739c5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EED 10356 bytes

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