Malicious PDF — malware analysis report

Static analysis result for SHA-256 267c6f2004be4248…

MALICIOUS

PDF

45.4 KB Created: 2020-07-31 08:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 955474d1b4f994476bff494e13ea71d8 SHA-1: 3242de8a4f96b32556876d0b6579781cde18bf86 SHA-256: 267c6f2004be424879cbe50a8ef36bb812f717028663e8ff74e702e467ecc560
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to external websites. One of these links points to a known malicious redirector. The document body is heavily obfuscated and does not provide clear textual lures, but the presence of the link farm and the malicious redirector strongly suggests a phishing or malicious content delivery attempt.

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.ru/pify?keyword=smoothed+particle+hydrodynamics+pdf
    • http://files.halfasshomemaker.com/uploads/1/3/1/4/131453022/ganavop.pdf
    • http://files.sailingforhome.com/uploads/1/3/1/3/131379719/kegume-debarupuw.pdf
    • http://files.treeoflifetroupe.org/uploads/1/3/2/8/132815359/3196c889ba.pdf
    • http://files.fouledbore.com/uploads/1/3/0/8/130814623/joxazobuzavaxiv.pdf
    • http://files.treeoflifetroupe.org/uploads/1/3/2/8/132815359/3196c889
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/junuwidikuxofitela.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/morepidewazirore.pdf
    • https://cdn.shopify.com/s/files/1/0437/2683/1784/files/55889958755.pdf
    • https://cdn.shopify.com/s/files/1/0431/8897/7815/files/6960781516.pdf
    • https://cdn.shopify.com/s/files/1/0434/3968/5799/files/77023632562.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/lakefu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1465/1038/files/zarizapizazozivurub.pdf
    • https://cdn.shopify.com/s/files/1/0432/4042/3587/files/mabisumuxarofefakovabora.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/93997307492.pdf
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/33798377184.pdf
    • https://cdn.shopify.com/s/files/1/0438/1828/7266/files/70727230423.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/81888392617.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_off00007186.bin
75719ebdf3879503f350368f4b11cd2d3e4c51a21f5f2c11d294f4d9c1112d23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7186 5388 bytes
font_01_sfnt_off000083aa.bin
320ec5b3696e314fe6e7868aa56967e0746bd7ae3ee27bc23690d88868c3f2e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83AA 10804 bytes

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