PDF malware analysis — malicious · cf9c1d1f1020bc72

MALICIOUS

PDF

35.5 KB Created: 2020-05-23 02:12:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b66112660b7fb1006614d205491d405d SHA-1: 1e74b8b421d58c9ee21480af48739da91b6e45e4 SHA-256: cf9c1d1f1020bc72a940cff9b1e03017882c02d85a67daf8d0b77261608dd5a4

92 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links to other PDF files hosted on various domains. This technique is often used for SEO poisoning to drive traffic to malicious sites or to distribute malware. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm designed to manipulate search engine results.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://adsl-63-204-18-20.benefitplans.org/uploads/1/3/1/3/131398296/131398296.html#enfermera+en+apuros+pdf
- http://emerson.team/uploads/1/3/1/4/131408032/1965439.pdf
- http://gracecapeless.com/uploads/1/3/1/3/131384333/cbcdb1802e0f6.pdf
- http://mwkodenkan.pcamartialarts.com/uploads/1/3/0/7/130738918/wesukozupawexamajadi.pdf
- http://raw-designz.com/uploads/1/3/0/5/130539408/8187565.pdf
- http://artistsgivingbydesign.com/uploads/1/3/1/6/131606168/jeradod.pdf
- http://midlandfencepros.com/uploads/1/3/0/5/130588545/josopexa.pdf
- http://stfrancisxavier.org/uploads/1/3/0/6/130639600/finoneb-gafinekuwap-nukux-lotaruga.pdf
- http://equinoxequestrian.org/uploads/1/3/1/4/131454482/748476.pdf
- http://rogerwyattauction.com/uploads/1/3/0/5/130543740/pixogesomexifutaru.pdf
- http://webdisk.omahaseniorresourcegroup.com/uploads/1/3/0/8/130874478/mobutudivefegaf.pdf
- http://averybrown.org/uploads/1/3/1/6/131636929/5ec97b4d.pdf
- http://neoconcrete.net/uploads/1/3/0/5/130551176/651524.pdf
- http://dpapernow.com/uploads/1/3/0/8/130814083/56d462d24.pdf
- http://dawsonwallets.com/uploads/1/3/1/8/131871602/gosukuxo.pdf
- http://crabbyselectric.com/uploads/1/3/0/3/130379173/vezivaboweduxik.pdf
- http://webmail.valleycprpros.com/uploads/1/3/2/3/132302710/xiwuji.pdf
- http://whothefareyou.com/uploads/1/3/0/8/130814711/wovabew.pdf
- http://peaceacademycharter.com/uploads/1/3/0/5/130550729/f7809112eda.pdf
- http://luciocursi.com/uploads/1/3/1/6/131606047/vusudofu.pdf
- http://mwartistry.com/uploads/1/3/0/6/130604220/2ce95a.pdf
- http://eatfittravel.com/uploads/1/3/1/4/131437969/basid_wenepedozimo_nadekow.pdf
- http://laruelawoffice.com/uploads/1/3/1/4/131452827/57d6f27.pdf
- http://roseblhair.com/uploads/1/3/1/3/131380720/cbe1e9ce5e2a11.pdf
- http://koditpaperflex.com/uploads/1/3/0/9/130969065/dewaxufibisutunewu.pdf
- http://windfallchurch.org/uploads/1/3/1/3/131381658/mutata.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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005bd7.bin` `0aed7e972bac0bdd201c1886f15393f067908db0e84d8bb4eb91f71e2d913eb4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5BD7	11672 bytes

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