Malicious PDF — malware analysis report

Static analysis result for SHA-256 972c3efe05ef78bb…

MALICIOUS

PDF

47.0 KB Created: 2020-07-28 18:09:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1c8d6ea9e0248a2960065b882b86fa0 SHA-1: 59861a32b2ac70c1678c439e39ab4c3368bf536d SHA-256: 972c3efe05ef78bb36d0066138c47f5c96f13c5fe0dfb7f2b5d3ae6ba3d02220
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests a link farm, likely for SEO manipulation or to host further malicious content. The document body, though heavily obfuscated, contains text related to 'guided tours of london and paris', which serves as a lure. The primary malicious IOC is the redirector URL.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=best+guided+tours+of+london+and+paris
    • http://files.racingbikesweden.com/uploads/1/3/2/6/132681295/zakipod-piwitim-mudomili-gojisegazokafig.pdf
    • http://files.westsalemtitansbaseball.com/uploads/1/3/1/3/131379485/podefovepowatuf-badin.pdf
    • http://files.partoencasamujeressabias.com/uploads/1/3/2/6/132681901/4725028.pdf
    • http://files.equinoxsupplements.co.uk/uploads/1/3/2/8/132814611/faxewunoralaj_rimapujalema_ganarawezutetuk_vowidimot.pdf
    • http://files.equinoxsupplements.co.uk/uploads/1/3/2/8/132814611/faxew
    • https://cdn.shopify.com/s/files/1/0437/8384/8097/files/pejunaxatefabetinufeme.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/41063612761.pdf
    • https://cdn.shopify.com/s/files/1/0432/1571/6516/files/relowebajomopipogases.pdf
    • https://cdn.shopify.com/s/files/1/0431/6843/2288/files/remuletovateropelilegaxit.pdf
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/vajepuzasoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7325/7116/files/disezuxoxawobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/davomuv.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/6268302418.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/kijovawakigulo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/65277170034.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_off00007a19.bin
8b4082aa976df1c2ff5055f860286f327d74b8835bfba90ea330f3b814c0f594
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A19 5140 bytes
font_01_sfnt_off00008b9d.bin
e0f1609a105ac3dce3c51bdc4fe57b78bd77de5a93eb7756aaab7df652f94f8e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B9D 10596 bytes