Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fbb5225b051c32c…

MALICIOUS

PDF

36.8 KB Created: 2020-08-13 21:37:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ba70baf98ab92aabc901165e99fff06 SHA-1: 3e5c28f0d0f2b087ce82fae15f1bb6233b710efa SHA-256: 8fbb5225b051c32c8b5f6a710ad4533e3328b9ed6d6927ec6763e042abfbed0d
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, masquerading as course answers to lure victims. The primary link, https://ttraff.cc/pify?keyword=mindtap+principles+of+economics+answers, is a known malicious redirector. The document body is heavily obfuscated and contains numerous embedded URLs, many pointing to Shopify domains, likely for hosting further malicious content or for SEO manipulation.

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.cc/pify?keyword=mindtap+principles+of+economics+answers
    • http://files.louannbauer.com/uploads/1/3/1/4/131437636/957380.pdf
    • http://mufareb.arthurgietzelt.com.au/uploads/1/3/2/8/132814930/dovisafeka.pdf
    • http://zilok.norjenes.com/uploads/1/3/2/8/132815296/1240825.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/zugotoviraxubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6829/3287/files/xefipinere.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/peduredugodaguso.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8954/files/testy_czasy_angielskie.pdf
    • https://cdn.shopify.com/s/files/1/0431/2373/6725/files/95373322454.pdf
    • https://cdn.shopify.com/s/files/1/0438/0363/9970/files/amsoil_signature_series_5w_50.pdf
    • https://cdn.shopify.com/s/files/1/0436/7482/8953/files/44752373372.pdf
    • https://cdn.shopify.com/s/files/1/0432/0608/2717/files/10143701805.pdf
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/tesis_akuntansi_manajemen.pdf
    • https://cdn.shopify.com/s/files/1/0430/6852/2657/files/basic_life_support_student_manual.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004733.bin
a3d1addcb8321e3573c982d3e0ac7c43b4d924962723feff79445a2de6375cad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4733 5400 bytes
font_01_sfnt_off00005988.bin
42ff86165a1679dd18e6fc68b83a9accc92273378790d4592e2f67e705dcb85f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5988 9924 bytes
font_02_sfnt_off00007b9a.bin
2e46b36fed23876ebb6e11f7a152916482bd8967c060a582f04975efc8a71266		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9A 2056 bytes

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