PDF malware analysis — malicious · 3e21f7a86eb89662

MALICIOUS

PDF

70.3 KB Created: 2020-03-29 22:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 448abccbef1f3d841ef6048090bd09da SHA-1: cf0ad6a154113d0164aa54dd3439429e99d676de SHA-256: 3e21f7a86eb896620626574165598f92f5ba14653a9c060c2cffd6b10bce0808

90 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, many of which are structured as SEO-optimized PDF files, indicating a link farm or redirection mechanism. The document body, though partially corrupted, contains text suggesting it's a 'Wisconsin form pw-1 instructions' and mentions 'wkhtmltopdf', hinting at a lure to a fake form or invoice. The presence of a 'PDF_SEO_LINK_FARM' heuristic firing and multiple embedded URLs strongly suggests a phishing or malware distribution attempt.

Heuristics 5

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
External URI info PDF_URI

PDF contains an external URL action
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 http://colddiamnd.com/uploads/1/3/0/9/130968995/130968995.html#wisconsin+form+pw-1+instructions
- http://lakeportunifiedschooldistrict.com/uploads/1/3/0/5/130551463/nanasir-pedubimo.pdf
- http://jmpremiumggeneralcinc.org/uploads/1/3/0/7/130739916/177b194.pdf
- http://marcialayouni.com/uploads/1/3/0/7/130775590/jidenagojepobiz.pdf
- http://seasonedresumesbysumer.com/uploads/1/3/0/6/130620272/nagufoxomu.pdf
- http://myenvisionphotography.com/uploads/1/3/1/1/131164320/gikip_nilobezabenasi_vuwifoveribob_topufax.pdf
- http://heightcheck.com/uploads/1/3/0/2/130271096/xutipatepakod.pdf
- http://premierprivateassets.com/uploads/1/3/0/6/130639624/4ac96ad9b0e.pdf
- http://soltosoul.ca/uploads/1/3/0/8/130815026/tawerirapategu.pdf
- http://propertyshopflorida.com/uploads/1/3/0/2/130289213/3183631.pdf
- http://locationname.com/uploads/1/3/0/6/130604240/0461352b.pdf
- http://mylovingarms.net/uploads/1/3/0/2/130271190/8993189.pdf
- http://theaccountingspecialist.com/uploads/1/3/0/7/130738700/tibudotowagoli.pdf
- http://insuredbyigor.com/uploads/1/3/1/1/131164152/lugakula_bawazaxanepagi_kirakavowufa.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_off0000cc17.bin` `069c40b2236d8969954ba54399c26233b266e855aff3b77e6937b828ee2dc850`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCC17	8668 bytes
`font_01_sfnt_off0000ed20.bin` `78116880e9c902c31767bfa12a9ff84ada309181a52ab1aa29cdf6fbfe115b45`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED20	2600 bytes
`font_02_sfnt_off0000f64c.bin` `779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF64C	16036 bytes

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