Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a06315e1a2db49…

MALICIOUS

PDF

39.8 KB Created: 2020-08-23 04:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8923e322177f9afae3f6e5d53b0c22a7 SHA-1: 1661c875de35de44d31b14e923fd33565794d736 SHA-256: e8a06315e1a2db49cde805c9daf804b4eba41542b08825400640328c2fa17125
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be a lure for a game mod. The document body also contains this URL, reinforcing the social engineering attempt. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used to improve search engine ranking for malicious content. The primary malicious URL is ttraff.com, which redirects to a page offering a 'granny chapter two 2 mod apk'.

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=granny+chapter+two+2+mod+apk
    • http://files.gracemiddletownde.com/uploads/1/3/0/9/130969993/ea78819a8.pdf
    • http://files.anastasiacollinsart.com/uploads/1/3/1/8/131871704/tojerizib.pdf
    • http://files.syandash.co.uk/uploads/1/3/0/8/130873876/baguf-gubiwapeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0231/files/molting_process_in_insects.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/wevowevatigijinomasotu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6927/6313/files/heart_failure_treatment_guidelines_2016.pdf
    • https://cdn.shopify.com/s/files/1/0434/1907/4712/files/fitbit_zip_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7835/9967/files/arquetipos_sistemicos_ejemplos.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/95673215664.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38140624907.pdf
    • https://cdn.shopify.com/s/files/1/0432/1683/0632/files/66667188683.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_off00005d2d.bin
83decc51645382e6b39fe14d04cc99d22b83a0e2cd6e500da763f257630b0bba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2D 5524 bytes
font_01_sfnt_off00006fe2.bin
4623912e03ac28f269d74bd59bbc02bf0e7e11f6b388b2d24dce2791c9835cda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 10180 bytes

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