Malicious PDF — malware analysis report

Static analysis result for SHA-256 92be4b19b1343c20…

MALICIOUS

PDF

44.2 KB Created: 2020-08-15 03:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49ec3f2723703d6d5fc8e2f68fb55f00 SHA-1: 206ed3b11fec576041d79527c365384f8b95fc52 SHA-256: 92be4b19b1343c2097f59a0563aa7d37e31586209afb7186d659fcd558bd4bab
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'https://ttraff.cc/wb?keyword=vade%20mecum%202020%20pdf'. This indicates a phishing or scam attempt, likely using the 'Vade mecum 2020 pdf' text as a lure to encourage clicks. No scripts were extracted, and the document body was heavily obfuscated.

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.cc/wb?keyword=vade%20mecum%202020%20pdf
    • http://dagus.stephanielamprea.com/uploads/1/3/0/9/130969060/4586927.pdf
    • http://files.munesworld.com/uploads/1/3/0/8/130813705/42fd796f32404d.pdf
    • http://files.icanfitinthat.com/uploads/1/3/0/7/130739625/4e1846.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6849/files/jilofemefezofujel.pdf
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/buxaguzune.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/7007/files/37919840467.pdf
    • https://cdn.shopify.com/s/files/1/0432/7872/9374/files/takozodukolajisoxaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/womakoxekumog.pdf
    • https://cdn.shopify.com/s/files/1/0429/2254/1209/files/xipibufo.pdf
    • https://cdn.shopify.com/s/files/1/0436/5906/7550/files/23775128714.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_off00005fb9.bin
46e00f9113900a094266c62039132e1ad9239ede3804cd013e28f6e65e7b2395		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 5236 bytes
font_01_sfnt_off0000717c.bin
293dcf37f0da9286d9fbcf192c294981444d307b2f54f6a4b009a8da19ac3823		 pdf-font-stream PDF embedded font (sfnt) at offset 0x717C 17848 bytes

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