PDF malware analysis — malicious · 99e968c19f2a1f40

MALICIOUS

PDF

58.8 KB Created: 2020-08-10 12:40:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0362f9c802fe9d9ac1e1be926da4d5ae SHA-1: 948ddccb4a61c8373f8e2ee42f0a2cdcd0a1880d SHA-256: 99e968c19f2a1f40c3a58c99ea94119b8d5eaa0003824b869a87d82ee6818680

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'https://ttraff.ru/pify?keyword=difference+between+aims+and+objectives+of+education+pdf'. This indicates the document's primary purpose is to redirect users to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=difference+between+aims+and+objectives+of+education+pdf
- http://files.ballfamilyqt.com/uploads/1/3/1/6/131606280/sitevotukurejo_ramimirunaja.pdf
- http://files.friederikeluisekelle.com/uploads/1/3/2/6/132683181/6947924.pdf
- http://files.maxvenus.com/uploads/1/3/1/3/131383478/8553d324d63.pdf
- http://files.perfectlg.org/uploads/1/3/2/6/132695663/mezebijaluvepugo.pdf
- https://cdn.shopify.com/s/files/1/0435/2334/2495/files/63363226861.pdf
- https://cdn.shopify.com/s/files/1/0433/8365/2506/files/17422732467.pdf
- https://cdn.shopify.com/s/files/1/0438/1098/0000/files/nupifufurozawoxuv.pdf
- https://cdn.shopify.com/s/files/1/0435/5286/6455/files/college_physics_9th_edition_solution_manual.pdf
- https://cdn.shopify.com/s/files/1/0437/0661/3912/files/quicktime_alt_1._81.pdf
- https://cdn.shopify.com/s/files/1/0427/8878/2236/files/zorowodubugevateputarilid.pdf
- https://cdn.shopify.com/s/files/1/0437/6592/3992/files/62340452918.pdf
- https://cdn.shopify.com/s/files/1/0429/5763/5735/files/vugaleponosuligaxemeka.pdf
- https://cdn.shopify.com/s/files/1/0437/2565/2117/files/7_days_to_die_rebar_frame.pdf
- https://cdn.shopify.com/s/files/1/0439/2475/0491/files/jekene.pdf
- https://cdn.shopify.com/s/files/1/0433/0225/6795/files/bancassurance_en_tunisie.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_off00009f03.bin` `a7830af281c6d7b61dc692724ea72cf36a7ea757c697155e9fdc4833d1a940fe`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F03	1768 bytes
`font_01_sfnt_off0000a7aa.bin` `94c2b9e40317d971bc0211bffe0a4ae3ae158bde8d1566c99aa6d5e3d225e71c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA7AA	5636 bytes
`font_02_sfnt_off0000badd.bin` `8c9b750e58640681ce069182b0abc700fa8e26c7b7a7faab4fbd993bd93af5a5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBADD	10144 bytes

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