PDF malware analysis — malicious · 7e9a009b12bdf510

MALICIOUS

PDF

35.0 KB Created: 2020-03-10 02:20:36 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: ec932c5facb719d1f529ca2939f1be6a SHA-1: 3742d618e4b32a7c39512ca949c4504b5f3813f6 SHA-256: 7e9a009b12bdf510cb1d1391754fb573e11dd1280904f3e9cc295c2ed23f987c

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or SEO spam campaign. The ML classifier also strongly indicated maliciousness. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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://jizhoudaoduchangcns.br3h.com/uploads/1/3/0/5/130542894/130542894.html#causes+of+edema+in+pregnancy+slideshare
- http://nicholeguerrette.com/uploads/1/3/0/5/130551621/fufonimogikasogaw.pdf
- http://entertainmenths.com/uploads/1/3/0/7/130776529/1170841.pdf
- http://mhswarriorettes.com/uploads/1/3/0/5/130588845/fibolezatikom.pdf
- http://natachaetsacha.com/uploads/1/3/0/5/130588813/xaluxalomozipexow.pdf
- http://stephanieg8wood.com/uploads/1/3/1/0/131069897/5648972.pdf
- http://mta-sts.mail.obsoleteaugust.com/uploads/1/3/0/7/130738661/790e3128cbb6.pdf
- http://www.xperienceballooning.be/uploads/1/3/0/2/130287965/177fb070209.pdf
- http://alsace.cpgtrips.com/uploads/1/3/0/2/130287445/giwaxapozux-xikutot.pdf
- http://endemicalab.com/uploads/1/3/0/2/130291702/83f412b5ed77.pdf
- http://shoptimall.com/uploads/1/3/0/4/130478307/wezipi.pdf
- http://maisonbouche.net/uploads/1/3/0/4/130492771/93e564f.pdf
- http://jaddellconstruction.com/uploads/1/3/0/5/130588703/213445.pdf
- http://mrsfullmersprekindergarten.com/uploads/1/3/0/5/130588244/9292943.pdf
- http://mta-sts.mail.dannypics.com/uploads/1/3/0/2/130271067/59055.pdf
- http://theroyalpineapple.com/uploads/1/3/0/3/130323581/mubunolavapak_tijugem.pdf
- http://wilkesboroapartments.com/uploads/1/3/0/9/130969873/rewavujimeligetatop.pdf
- http://loginetwork.com/uploads/1/3/0/2/130287266/4893269.pdf
- http://frolishformilton.com/uploads/1/3/0/6/130639984/rebidow-nawimabepasak.pdf
- http://mta-sts.blackdymondboxers.com/uploads/1/3/0/9/130969829/7518291.pdf
- http://iusedtobetechnical.com/uploads/1/3/0/9/130969762/ponubuzejedim.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_off00005ffd.bin` `5681c4fe9b9d9118a94a6ad7deecf6bc848d27ab2e7b1ee0b3f82237ae85298d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FFD	7196 bytes

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