Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed97f3e2c1684242…

MALICIOUS

PDF

58.9 KB Created: 2020-08-04 21:05:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efc5f01b0a7429a571da42d0d4ffc03e SHA-1: 287e85dfc8cc204b5dbdfa5186fd8088c3923017 SHA-256: ed97f3e2c168424278e851e1afe61994fee4ce6c8081489881ff7341df0c691f
130 Risk Score

Malware Insights

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

The PDF contains a lure for a biology textbook, which is a common social engineering tactic. It embeds multiple links, with one identified as a malicious redirector pointing to 'ttraff.cc'. This redirector is likely used to funnel victims to a malicious payload or phishing site. The PDF also contains a mass external link farm, suggesting an attempt to manipulate search engine results or distribute malicious content widely.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=biology+1+textbook+miller+and+levine+pdf
    • http://files.monteservicingandrepair.com/uploads/1/3/2/8/132816202/a61a156af52.pdf
    • http://files.synergyhairandbeautyelloughton.co.uk/uploads/1/3/0/7/130738696/gakoxitodivip.pdf
    • http://files.cencalproperty.com/uploads/1/3/1/6/131606125/7bb5b2a30d.pdf
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/dotupuzutenorajole.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/obama_quotes_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/55129295388.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/28314320413.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/pulajofejuwofifituxadil.pdf
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/baxudedunejipadam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78108387577.pdf
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/32595983266.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/nokapebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/1409/3986/files/at_t_assembly_syntax.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_off0000a2e2.bin
66b905cad1ec739863ca7a3e8dab51e0f1a5fd5bfb1a8b27bebc81d34dcc422b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E2 5720 bytes
font_01_sfnt_off0000b660.bin
17fcf0c36b0d9179e97eb179d9611ba60e85d0bc6dd36201edef05d59c252f8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB660 12320 bytes

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