PDF malware analysis — malicious · 95033aff52e4baaf

MALICIOUS

PDF

51.0 KB Created: 2020-08-06 19:51:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a99e1d4649d2bc6f184fccda5b86cb45 SHA-1: c4c581ff73dd567d07164efec9fe55eccebd3d6c SHA-256: 95033aff52e4baaf42e1b2c0eeaa80c3512e729e920531a4a8491cbe6367d325

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDFs, a technique often used for SEO poisoning or to distribute malicious content. One prominent link, 'https://ttraff.cc/pify?keyword=princeton+review+cracking+the+sat+math+2+subject+test+pdf', is identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to study materials, aiming to trick users into clicking the malicious link.

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=princeton+review+cracking+the+sat+math+2+subject+test+pdf
- http://files.mrsnow.org/uploads/1/3/1/4/131453902/kafasefejigufe.pdf
- http://files.davesclp.com/uploads/1/3/0/7/130775046/0c69ce0dce.pdf
- http://files.lilsproutpress.com/uploads/1/3/2/8/132815050/3647949.pdf
- https://cdn.shopify.com/s/files/1/0429/9345/1159/files/48193357156.pdf
- https://cdn.shopify.com/s/files/1/0435/0840/0280/files/kudetidasuzikubenile.pdf
- https://cdn.shopify.com/s/files/1/0431/2068/9306/files/37665511917.pdf
- https://cdn.shopify.com/s/files/1/0437/3292/6616/files/88330095670.pdf
- https://cdn.shopify.com/s/files/1/0431/0515/7284/files/zovasagoto.pdf
- https://cdn.shopify.com/s/files/1/0433/7080/7459/files/nitijisigedubojet.pdf
- https://cdn.shopify.com/s/files/1/0433/6179/6248/files/jenazolososetibusibulifo.pdf
- https://cdn.shopify.com/s/files/1/0430/7252/0352/files/23287462788.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
- https://cdn.shopify.com/s/files/1/0436/1859/9075/files/mass_air_flow_sensor_seminar_report.pdf
- https://cdn.shopify.com/s/files/1/0438/6367/0944/files/zazonaved.pdf
- https://cdn.shopify.com/s/files/1/0435/5240/7704/files/kogusaruwuban.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000064c4.bin` `aa3aa8c7711b081e2cb31b701024ca32989792ec6d38570e38f56efc946023a9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64C4	5984 bytes
`font_01_sfnt_off00007904.bin` `809a784381843f1d65321269a0b25c0dd237d0650937c75ba917c58bd9054f3c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7904	19740 bytes
`font_02_sfnt_off0000ae79.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAE79	4324 bytes

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