PDF malware analysis — malicious · 9b4bfc60160d1ee3

MALICIOUS

PDF

50.1 KB Created: 2020-03-15 02:57:41 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 004ccd888ad171785edc08b79dc6852a SHA-1: 4a860445ba082063cf3909b47e487e6c1cd29f98 SHA-256: 9b4bfc60160d1ee3956f700ada39727cf48a0460509730057a43e940ae755669

92 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains a large number of external links to other PDF files hosted on various domains, indicative of a link farm or SEO poisoning attack. The ML classifier strongly flagged this PDF as malicious. The primary intent appears to be directing users to a network of potentially malicious or spam-related content through these numerous external links.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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://female.mediutopia.com/uploads/1/3/0/4/130477085/130477085.html#chopin+nocturne+no+12+sheet+music
- http://www.elevo.net/uploads/1/3/0/4/130488669/fujixok.pdf
- http://www.dmsaulnier.com/uploads/1/3/0/3/130313466/wudazakif.pdf
- http://k-cast.net/uploads/1/3/0/3/130379126/e04784f34534c9d.pdf
- http://dimensionalfinancialservices.com/uploads/1/3/0/5/130588681/1858231.pdf
- http://business.westernreservesc.org/uploads/1/3/0/7/130776321/1f550e6b9a.pdf
- http://originalaeropress.com/uploads/1/3/0/4/130476082/3042179.pdf
- http://rifugiovallegrande.shop/uploads/1/3/0/6/130639635/4674095.pdf
- http://prettysimpleorganizing.net/uploads/1/3/0/5/130540293/vejaloje.pdf
- http://nicolewilson.net/uploads/1/3/0/7/130739343/7623107.pdf
- http://leasepurchasephilahomes.com/uploads/1/3/0/5/130550931/wexovigisapesiver.pdf
- http://lightningbabe.net/uploads/1/3/0/4/130476412/c6b67b16c6.pdf
- http://universitycommercecenter.com/uploads/1/3/0/6/130620293/0570e38938.pdf
- http://projectwoden.com/uploads/1/3/0/7/130738915/695734.pdf
- http://supportersection.com/uploads/1/3/0/4/130488295/2064663.pdf
- http://masterrepairplumbing.org/uploads/1/3/0/4/130488301/8fec4.pdf
- http://ericcawley.com/uploads/1/3/0/3/130323405/suboda.pdf
- http://thejoysofjewelry.com/uploads/1/3/0/5/130539987/fba7dfedf.pdf
- http://www.vocalassociates.com/uploads/1/3/0/8/130813837/8326682.pdf
- http://buystrathconahomes.com/uploads/1/3/0/7/130738635/xopumedi_gepagunifodib_xabavevew.pdf
- http://buyeveryinglobal.com/uploads/1/3/0/4/130435619/6b8dca.pdf
- http://teamlanternrouge.com/uploads/1/3/0/5/130550666/bobiv-mufusujakiruma-fupegozudoxup.pdf
- http://paigecooper.net/uploads/1/3/0/5/130551177/zibanutube-tajofavorojole-lalobefu.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_off00008153.bin` `0dbf5eef099492d8fde4d4d96848d5f848947dcd7aafcf50b7404a5c01e948f1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8153	9600 bytes
`font_01_sfnt_off0000a4e5.bin` `209a1914dac8e9aac3c16c0a9081bcc733128533442ca7fed933fc343c2e6065`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA4E5	16184 bytes

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