PDF malware analysis — malicious · e75296fb2375d6bd

MALICIOUS

PDF

44.8 KB Created: 2020-04-30 18:40:21 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)

MD5: 2f93e4bf399b000c5ff4e9f4556e2847 SHA-1: fe13bb24270e09db47d3286bbbf4f7541a88befb SHA-256: e75296fb2375d6bd4e8328ec9f7f4c12194df8f235dc786b6605613a98ba6d60

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by a machine learning classifier with high confidence. It contains a large number of external links, many pointing to PDF files on various domains, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs is http://pcrinvestigations.com/uploads/1/3/1/4/131406816/131406816.html#android+network+monitor+code, which may serve as a lure or redirect to malicious content.

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://pcrinvestigations.com/uploads/1/3/1/4/131406816/131406816.html#android+network+monitor+code
- http://goshentrends.com/uploads/1/3/0/5/130550891/6c13e29.pdf
- http://lucidaustin.com/uploads/1/3/0/6/130639812/vifivab_begeneka.pdf
- http://fabricfrostingandfrills.com/uploads/1/3/1/4/131438217/2613278.pdf
- http://chapsconfections.com/uploads/1/3/0/6/130605016/613937.pdf
- http://shelbysjewels.net/uploads/1/3/0/5/130541763/nesatuxiluxivapexofo.pdf
- http://buchananj.com/uploads/1/3/0/7/130740250/nolimujeserekezunus.pdf
- http://thompsonsocialstudies.com/uploads/1/3/1/3/131379439/liwaj.pdf
- http://boomerangwaytouristpark.com/uploads/1/3/1/8/131871390/65c1a9934.pdf
- http://stetic.ca/uploads/1/3/0/4/130436513/a6e32.pdf
- http://nietduurverhuur.com/uploads/1/3/0/8/130814169/zejofofukopup.pdf
- http://possibilitymanagement.us/uploads/1/3/0/2/130270855/vekixon.pdf
- http://thehempconnection.ca/uploads/1/3/0/7/130739817/740162.pdf
- http://chupzdesigns.com/uploads/1/3/0/3/130313700/8557062.pdf
- http://jaytapstudios.com/uploads/1/3/1/4/131407163/sakiturikesirupawo.pdf
- http://earthstrongbirthservices.com/uploads/1/3/0/5/130588858/ea0cc.pdf
- http://hockeyconcussionsolutions.com/uploads/1/3/1/6/131606025/f1189.pdf
- http://bizibook.net/uploads/1/3/1/3/131380848/duzunemuwifo-zidelodaba.pdf
- http://nicolehedlund.com/uploads/1/3/0/3/130313193/6312782.pdf
- http://hockeyconcussionsolutions.com/uploads/1/3/1/6/131606025/
- 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_off000087c2.bin` `9383bb1c31589c30b420fc54c1b6729f43daa5364bcb051b2b414ccb1d6121e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x87C2	8276 bytes

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