Malicious PDF — malware analysis report

Static analysis result for SHA-256 21980e1de0068784…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 13:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffa698ac2edd054ecc1de5eca22cc728 SHA-1: 6e71073105d363a600a76193552dd652d64c5ed7 SHA-256: 21980e1de006878403b984a26d257b0f5a6d7dc2fe32627c3d33e948a589c80b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many pointing to external PDF files hosted on various domains, including shopify.com. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves as a distribution point for further malicious content. The presence of a mass link farm suggests an attempt to manipulate search results or distribute malware indirectly.

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=aparato+reproductor+femenino+externo+pdf
    • http://files.ne-surgerycenter.net/uploads/1/3/2/3/132303170/bojen.pdf
    • http://files.graceyfeet.com/uploads/1/3/1/6/131636775/4458505.pdf
    • http://files.dccsac.org/uploads/1/3/2/7/132712129/pidosedewujoxalob.pdf
    • https://cdn.shopify.com/s/files/1/0434/3827/6760/files/kafokij.pdf
    • https://cdn.shopify.com/s/files/1/0439/6302/3518/files/72133116410.pdf
    • https://cdn.shopify.com/s/files/1/0440/8701/7637/files/ac_to_dc_converter_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/nibof.pdf
    • https://cdn.shopify.com/s/files/1/0432/6372/1637/files/95727106644.pdf
    • https://cdn.shopify.com/s/files/1/0437/9662/7616/files/madegorumasosipun.pdf
    • https://cdn.shopify.com/s/files/1/0440/6660/3158/files/81892064736.pdf
    • https://cdn.shopify.com/s/files/1/0430/5541/5445/files/dajabafujovubaxaji.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/30936069026.pdf
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/mebibozimokelopepunewo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1195/6126/files/lerinidoxojuzixinabus.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_off0000713c.bin
376e41539c73d3eddc58a62de7d165c95d2c00c2b4d08c4ebe8c276c668edac9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713C 5148 bytes
font_01_sfnt_off000082b7.bin
9a42c3ad55f47a3f61969adc012193afe0861216c39f355baaf33576cbf985a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 11032 bytes

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