PDF malware analysis — malicious · c2361dbc219cb2ca

MALICIOUS

PDF

59.1 KB Created: 2020-08-06 05:38:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a0abe2caff187314614bc306198f36f9 SHA-1: 17c4067e6bbdb85f882d1a748acf17b21eff5bc3 SHA-256: c2361dbc219cb2ca7079fce36b86d640cedcc1194689941e7002557fca69a038

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=a+level+physical+chemistry+notes+pdf'. This URL is presented within the document body, suggesting a social engineering lure. The presence of a PDF link farm heuristic further indicates malicious intent to distribute links. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=a+level+physical+chemistry+notes+pdf
- http://files.claytonguy.com/uploads/1/3/0/7/130739517/1de1fd00a.pdf
- http://files.transcend-ed.com/uploads/1/3/0/9/130968926/turir-dekabojov-jexiv-rexajuxe.pdf
- http://files.laurasbeadedtreasures.com/uploads/1/3/1/1/131164424/2391580.pdf
- http://zikoxupu.httymd.com/uploads/1/3/1/8/131857920/rijelupirewipake.pdf
- http://files.tuscanrenaissanceacademy.com/uploads/1/3/2/8/132815298/1899633.pdf
- https://cdn.shopify.com/s/files/1/0432/2135/2606/files/bavodejodov.pdf
- https://cdn.shopify.com/s/files/1/0429/0497/7564/files/sarowazubari.pdf
- https://cdn.shopify.com/s/files/1/0431/6397/5835/files/lefumakamosuz.pdf
- https://cdn.shopify.com/s/files/1/0430/8018/8058/files/pokemon_trainer_sprite_template.pdf
- https://cdn.shopify.com/s/files/1/0434/1478/2119/files/98080959494.pdf
- https://cdn.shopify.com/s/files/1/0435/5185/0647/files/calibration_of_pressure_gauge.pdf
- https://cdn.shopify.com/s/files/1/0432/5113/8715/files/27603791633.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67641838088.pdf
- https://cdn.shopify.com/s/files/1/0434/0803/1893/files/buronikulomevijanowof.pdf
- https://cdn.shopify.com/s/files/1/0438/0862/0701/files/zagixifofepe.pdf
- https://cdn.shopify.com/s/files/1/0436/8341/4169/files/rutivizavuzonazukira.pdf
- https://cdn.shopify.com/s/files/1/0428/7932/0223/files/jspdf_autotable_columnstyles_width.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000a7d2.bin` `f7682804db6bc00abc5030f4f421dd9e80ea611255ce4e29cea7e6beff5f877c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA7D2	5548 bytes
`font_01_sfnt_off0000ba93.bin` `f4327c937b09a548ecd6cba00c4699c7f745c195b34f0f8937e85ad3fdd77896`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBA93	10668 bytes

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