Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b044f313e5cd36e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-22 23:16:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 429b66f1818dbc89ca08d30ccb7e5ca8 SHA-1: 1dfbc34a2b82db93ca3e455b6d136b6d6d2cb487 SHA-256: 4b044f313e5cd36e4011ae89456cf40ae246777a15d0d9cef89b2f9f32143273
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and phishing campaigns. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains text related to a boiler manual and the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

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=chaffoteaux+et+maury+elexia+ii+manual
    • http://mopux.ryanscgrepairestore.com/uploads/1/3/1/3/131380600/9635ef58.pdf
    • http://mawasif.your96.com/uploads/1/3/1/8/131857445/c13f5.pdf
    • http://files.thesportier.com/uploads/1/3/1/3/131378993/6833021.pdf
    • https://cdn.shopify.com/s/files/1/0438/1402/7421/files/suxuwovamavetepu.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3784/files/sudaxapodilekuguteb.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/naragavulabibizezefokivaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/femiwezonisokisitowamiju.pdf
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/toledo_bend_fishing_reports.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/33270267749.pdf
    • https://cdn.shopify.com/s/files/1/0438/3775/1453/files/veserujivupazavojuxad.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/nolegipewubufejipuzotuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/lixisoturomuxo.pdf
    • https://cdn.shopify.com/s/files/1/0434/2611/9831/files/60399403288.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_off000062da.bin
7e47b07fb02c4e6a80beea282f5a7dd3dd12b51b9e86d3e318c283bc88dbd9f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62DA 4904 bytes
font_01_sfnt_off00007373.bin
58f3aae17dfff02b947fafa647a0751c4d4090a2022261ce7b729330632bd051		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7373 13912 bytes

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