Malicious PDF — malware analysis report

Static analysis result for SHA-256 e971b2d33f68c97c…

MALICIOUS

PDF

47.4 KB Created: 2020-09-02 15:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 033aa9a8493f43816968398dd7e42075 SHA-1: 3fa51f872d7719158a79825fc22d1487e7def396 SHA-256: e971b2d33f68c97c8ead670ec404c9a6a5ba2c3cdb3aba3da5ed621a646551d8
150 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for containing a mass external PDF link farm, with many links pointing to cdn.shopify.com. One specific URL, https://ttraff.link/pify?keyword=classic+wow+affliction+warlock+leveling+guide, is identified as a known malicious redirector. The document body, though heavily obfuscated, contains references to this redirector URL and other Shopify links, suggesting a social engineering lure to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.link/pify?keyword=classic+wow+affliction+warlock+leveling+guide
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/games_like_diablo_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/simem.pdf
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/assessment_strategies_and_practices.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/sorazarurupatorafo.pdf
    • https://cdn.shopify.com/s/files/1/0464/7531/3302/files/640174948.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2261/files/zuxuwatuvifasesozixap.pdf
    • https://cdn.shopify.com/s/files/1/0463/2671/0432/files/wideband_beamforming_radar.pdf
    • https://cdn.shopify.com/s/files/1/0440/1774/6070/files/31325400319.pdf
    • https://cdn.shopify.com/s/files/1/0431/5434/2042/files/demographic_information_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0437/0133/8266/files/minefotosarajitijijejina.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0707/files/gozifusubex.pdf
    • https://static.usrfiles.com/ugd/726ec9_7af24d74841e4b1ea2309e1e4bc109fd.pdf
    • https://static.usrfiles.com/ugd/d99ef3_fb8cc75fc2ff4361afc9d0c3f6eb8ba6.pdf
    • https://static.usrfiles.com/ugd/429b25_32233e6642e945af821bf90af7f8772c.pdf
    • https://static.usrfiles.com/ugd/b8c837_19e7d8f9dffa49db80747831204b553c.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_off00007949.bin
b3d83d68df13bb4605e4dc528ecd72a5a575d54aa56ef59fb8d553e4b2ea15b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7949 5312 bytes
font_01_sfnt_off00008b81.bin
a26e561ed1db4378d8642d3d56cf58507507c5ee82b9bbc514ec6f2f752c0c5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B81 11408 bytes

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