PDF malware analysis — malicious · c5a73b99b31addf8

MALICIOUS

PDF

36.2 KB Created: 2020-08-05 06:30:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a9d95106b7cb1a6b17c5076c5c6d1bce SHA-1: c666f87c7a8c44796f60ae72d7408d0b739ae2a0 SHA-256: c5a73b99b31addf8467daa6581f0cfcfd426d0a131ff9ad99290bd4f027e6780

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 a redirector service (ttraff.ru) known for malicious activity. The document body itself contains obfuscated text and references to download links, suggesting a lure to external malicious content. The ML classifier also strongly indicated maliciousness.

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=evangelios+apocrifos+pdf+descargar
- http://files.fraterautomation.com/uploads/1/3/1/8/131871433/nivedipumazezi.pdf
- http://files.orlandokb1.com/uploads/1/3/1/4/131452811/febivi_rurade_gejuraguxok_wizogaxumageji.pdf
- http://files.dragonchoirs.net/uploads/1/3/1/3/131380504/nebemebiber-gorik-fiwumoxunubowe.pdf
- http://files.thewomenof353.com/uploads/1/3/1/6/131607321/lonabitalejawubalale.pdf
- https://cdn.shopify.com/s/files/1/0436/6965/1606/files/java_1._8_for_mac_install.pdf
- https://cdn.shopify.com/s/files/1/0440/8714/8694/files/44512216324.pdf
- https://cdn.shopify.com/s/files/1/0433/4275/8056/files/31573233120.pdf
- https://cdn.shopify.com/s/files/1/0440/0444/2262/files/32224745777.pdf
- https://cdn.shopify.com/s/files/1/0437/3826/7809/files/sajopugiribadogoxafo.pdf
- https://cdn.shopify.com/s/files/1/0429/9217/3217/files/59828467640.pdf
- https://cdn.shopify.com/s/files/1/0431/5011/4967/files/jirodupobofisev.pdf
- https://cdn.shopify.com/s/files/1/0430/0819/6767/files/zixanalikamom.pdf
- https://cdn.shopify.com/s/files/1/0428/7427/3948/files/konetukogulamo.pdf
- https://cdn.shopify.com/s/files/1/0431/7446/1594/files/kameb.pdf
- https://cdn.shopify.com/s/files/1/0430/6498/3701/files/anxiety_disorder_research.pdf
- https://cdn.shopify.com/s/files/1/0429/5986/3961/files/mepevuwogadaxemizumun.pdf
- https://cdn.shopify.com/s/files/1/0436/4143/8366/files/9730935217.pdf
- https://cdn.shopify.com/s/files/1/0440/9557/0072/files/54978801369.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_off00004d62.bin` `37e526592edeee92bb46549536a7ed58c00b4f54119b3741fce835f791f8ef20`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4D62	5340 bytes
`font_01_sfnt_off00005fa8.bin` `5b511628e31ace97960d9fd69b830ad12f3b95a31ba208607eaf993cc9f95b7a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FA8	10560 bytes

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