Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ca588c010b584b…

MALICIOUS

PDF

47.4 KB Created: 2020-08-02 22:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bdcae9b32e9a72a52b05948c90933fe SHA-1: 6a8b71ba58ce0fe2cf5d57d2c466afc1b650a3a6 SHA-256: 59ca588c010b584b2642b98d76c1b0f1fcf8e1b4943a130974f0245f1813b0bd
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files. One of these links, https://ttraff.ru/pify?keyword=skyrim+requiem+manual, is identified as a malicious redirector. The document body appears to be corrupted or obfuscated, but the presence of numerous links suggests a link farm or redirection strategy to distribute malicious content. 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.ru/pify?keyword=skyrim+requiem+manual
    • http://files.hattershouse.com/uploads/1/3/1/1/131164573/2523741.pdf
    • http://files.winterhomeschoolconference.com/uploads/1/3/1/4/131438641/zijebadifebomi_wuzoz_rororef.pdf
    • http://files.minigoldendoodlesutah.com/uploads/1/3/0/8/130814717/furolexax-luzifuji.pdf
    • http://files.proedgepoolsexpress.com/uploads/1/3/0/8/130874482/a4557c4.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/kurisavosevarevatu.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/wejoxepopopukunejofuna.pdf
    • https://cdn.shopify.com/s/files/1/0435/5473/4241/files/32950777938.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/love_junkies_manga.pdf
    • https://cdn.shopify.com/s/files/1/0438/2933/0077/files/72216472525.pdf
    • https://cdn.shopify.com/s/files/1/0439/7219/8558/files/48891044250.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13139855908.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/50119801012.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9221/files/paketurududurikunudisan.pdf
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/vukusamevuboga.pdf
    • https://cdn.shopify.com/s/files/1/0434/2169/6149/files/list_sum_python.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_off00007bf0.bin
68a053405ebde0d63d5ad7052dbc2683af78d6dc52a7f98e711d877f392df70d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF0 5048 bytes
font_01_sfnt_off00008d13.bin
c89a6282b268e05f4c49ca7bae332170859173496a1780bbae92161ab3252bd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D13 10472 bytes

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