Malicious PDF — malware analysis report

Static analysis result for SHA-256 2edce0081efd34c7…

MALICIOUS

PDF

52.6 KB Created: 2020-08-01 20:12:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e5ce6fee4786615ae83e4d41ced762 SHA-1: dde57d36522a749e86e6d2ec61768da33385c101 SHA-256: 2edce0081efd34c7d0078c6f1eb4a2a805c6361ceb91b7dbbd873ad865c486b7
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 spam and phishing campaigns. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final malicious destination. The document body itself contains text related to academic publications, suggesting a lure to trick users into clicking the malicious 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.ru/pify?keyword=markel+technical+communication+11th+edition+pdf
    • http://files.campmiller.com/uploads/1/3/0/7/130739308/3685140.pdf
    • http://files.irvingtonfbla.org/uploads/1/3/1/0/131071067/kaminupububo-kawezeler-pedajifaxetor.pdf
    • http://files.nokillhuntsville.com/uploads/1/3/1/4/131455883/jalupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/ati_gerontology_final.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3604/files/32668972986.pdf
    • https://cdn.shopify.com/s/files/1/0433/5891/2662/files/132469683.pdf
    • https://cdn.shopify.com/s/files/1/0435/5719/1843/files/26629665666.pdf
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/xinex.pdf
    • https://cdn.shopify.com/s/files/1/0433/1280/8091/files/webinigogikodufamiziva.pdf
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/sobaremizawiruwuviponowa.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/lazituzewivoxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0799/files/titigerijuwowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4173/4312/files/wizipet.pdf
    • https://cdn.shopify.com/s/files/1/0433/2614/4670/files/fuwujemapun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5879/8492/files/bimoweledisepuwevakasafa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/88728549457.pdf
    • https://cdn.shopify.com/s/files/1/0428/6981/7511/files/kalesami.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_off000084b0.bin
5349b18395497bec1350b4b7ec63d1bd60e28315a1df98935f09dbb101ba4664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84B0 5336 bytes
font_01_sfnt_off000096c1.bin
f72ee766154d25a2a3b66e750fee709160ba1f0afda655e78952cca12a53eacf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96C1 14896 bytes

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