Malicious PDF — malware analysis report

Static analysis result for SHA-256 fecabe7264ed1015…

MALICIOUS

PDF

56.6 KB Created: 2020-08-11 03:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43dc376342b183ed88dbb09682dd5b37 SHA-1: a94638f2e691560a02e1b90a35828ac46fd69700 SHA-256: fecabe7264ed1015bf75f20a0a1ea999d82a8a25b7284d38c2b768d77d112125
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to educational materials. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to further malicious content.

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.com/pify?keyword=maths+questions+for+class+6+with+answers+pdf
    • http://files.tradebikes.net/uploads/1/3/0/7/130739697/00a83d2f0f1069.pdf
    • http://files.yourtrophybuck.com/uploads/1/3/0/7/130740073/gagezodixiniromolum.pdf
    • http://files.taylorwaterassoc.com/uploads/1/3/0/8/130874587/5040989.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/958587404.pdf
    • https://cdn.shopify.com/s/files/1/0433/0356/7515/files/warcraft_book_arthas.pdf
    • https://cdn.shopify.com/s/files/1/0427/7541/2902/files/quartic_equation_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/5724/0469/files/clicker_heroes_redeem_code_generator.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/87663523200.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/60229528165.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0200/files/bank_exam_aptitude_questions_and_answers_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/2508/7138/files/30241985435.pdf
    • https://cdn.shopify.com/s/files/1/0433/3876/0342/files/tasovatutidun.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/6504731454.pdf
    • https://cdn.shopify.com/s/files/1/0437/5222/6974/files/gisoj.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_off000094f8.bin
75a2eb6b5a220e4ca77c6035c1c663b8aef6dcddd668278b5cc93d2956ca0640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94F8 5620 bytes
font_01_sfnt_off0000a823.bin
68c26b0d11e8ba60a3202e25abf58f3f43aba58e3dfb4356142de3d672f19f1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA823 14268 bytes

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