PDF malware analysis — malicious · 7f22105dff4f4301

MALICIOUS

PDF

35.5 KB Created: 2020-05-16 07:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2fd6db47c0def0b9bc6d4684d3532b36 SHA-1: adc2e80ca0f827168c9d4297fe85c8d66fd0eb06 SHA-256: 7f22105dff4f43012bd7fdd70e21cb6a8059be8a598d4326a3ca2111f23d243e

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It contains a large number of external links, many of which point to similarly structured URLs on different domains. The primary purpose appears to be a link farm, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted, and the document body is largely unreadable binary data.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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://nupelicanparty.org/uploads/1/3/0/4/130488067/130488067.html#berberine+and+metformin+taken+together
- http://mylesateliersdenine.com/uploads/1/3/0/7/130776175/3526782.pdf
- http://doareumatodeamorebeleza.com/uploads/1/3/0/7/130775639/kizilozi.pdf
- http://cashmerebodywork.com/uploads/1/3/1/3/131383266/biwodupafobupuzaxak.pdf
- http://chieftainsrugby.com/uploads/1/3/0/2/130289226/8c8ead12c6.pdf
- http://limonmasonry.com/uploads/1/3/0/8/130813586/sexatasuramigodusa.pdf
- http://supatools.com/uploads/1/3/0/7/130776322/2630055.pdf
- http://apcopafe.com/uploads/1/3/1/3/131381167/duwolagibi.pdf
- http://bigsandymontana.com/uploads/1/3/0/6/130639885/mowukuz.pdf
- http://theaxistence.com/uploads/1/3/1/3/131381839/1353992.pdf
- http://idea15-interior.com/uploads/1/3/1/4/131437425/7430473.pdf
- http://h20engineering.net/uploads/1/3/0/3/130312951/viluba-zuwuzo.pdf
- http://meetrobyn.com/uploads/1/3/0/7/130775866/6272010.pdf
- http://outside-interiors.com/uploads/1/3/1/0/131070579/kigowodabix-zivaxane.pdf
- http://babystrollerexpo.com/uploads/1/3/0/7/130738720/xatido.pdf
- http://wallepikkers.nl/uploads/1/3/0/2/130274241/kokikok.pdf
- http://bridgetgelms.com/uploads/1/3/0/7/130739653/pomif_dugenenij.pdf
- http://sweetwaterfarmsllc.com/uploads/1/3/1/4/131454151/0dcfeda4a4e6.pdf
- http://thebourbondictionary.com/uploads/1/3/0/4/130488935/vetazetujo.pdf
- http://absolutebestquotes.com/uploads/1/3/0/8/130873851/6584976.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_off00005f58.bin` `b3b23dfaf527073e6accf24ec6245b0b55855d76b43c81c88f05270f2c58e16e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F58	10196 bytes

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