PDF malware analysis — malicious · 88785b38ae5ac34a

MALICIOUS

PDF

43.9 KB Authoring application: PDFBox

MD5: ac133a3d63bafba538d11429ee343e94 SHA-1: d602216a46773accf611b39f0d3ca26365ae3648 SHA-256: 88785b38ae5ac34ae5acc63860edd666200c8865de12da1fc164459ab5f146b0

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links to other PDF files hosted across various domains. This technique is often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, aligning with the PDF_SEO_LINK_FARM heuristic.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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.
ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
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://swarmstudios.com/uploads/1/3/0/6/130621788/talid.pdf
- http://www.yourprintscharming.co.uk/uploads/1/3/0/5/130550682/19ac03008b.pdf
- http://vigrinhotels.com/uploads/1/3/0/5/130551687/1844690.pdf
- http://openarmsbanduk.com/uploads/1/3/0/5/130543276/8581396.pdf
- http://captreefishingboat.com/uploads/1/3/0/7/130738657/509b5b.pdf
- http://ay-kay.com/uploads/1/3/0/6/130621413/pupepuzowegesu-bevujupabuk-dutoton-pipegosisu.pdf
- http://tintanton.com/uploads/1/3/0/4/130478566/c1b3f468d3d212.pdf
- http://nicholasjozaites.com/uploads/1/3/0/4/130483638/5c85d5c68.pdf
- http://aprendeinlgesrapido.com/uploads/1/3/0/4/130476327/sezefinub-piwasipuwubowaz.pdf
- http://viptraininghub.com/uploads/1/3/0/7/130740480/rerofumade.pdf
- http://merrifieldseminar.com/uploads/1/3/0/6/130604779/f1b7e.pdf
- http://pinewoodcabins.com/uploads/1/3/0/7/130775878/rikenadizegizuj_buwepixoze_lobazizadeneje_ziwuvaruvakil.pdf
- http://rrgdigitalmarketing.com/uploads/1/3/0/2/130272582/7250237.pdf
- http://christinalozanofier.com/uploads/1/3/0/5/130550973/9898272.pdf
- http://classicalteachingtextbook.com/uploads/1/3/0/4/130476185/fevujibipufuku.pdf
- http://rosegold.club/uploads/1/3/0/2/130287502/1102271.pdf
- http://jccartstudios.org/uploads/1/3/0/5/130551770/zuwenesu-genigunoxufodem-duguziligefize.pdf
- http://hoyporvos.org/uploads/1/3/0/5/130541271/zopadejemeb_vajufu_ledagarako.pdf
- http://swankyfork.com/uploads/1/3/0/6/130639815/1041851.pdf
- http://strawhatgames.com/uploads/1/3/0/4/130476766/koseloso.pdf
- http://jeffhagemandesigns.com/uploads/1/3/0/2/130270812/905438.pdf
- http://joyfulearthsoaps.com/uploads/1/3/0/6/130640114/8634334.pdf
- http://www.a-sacramentoprocessserver.com/uploads/1/3/0/3/130313022/09f8f74d100c4.pdf
- http://mirthrot.net/uploads/1/3/0/5/130588913/texufopifeji_jivenuti_vovuled.pdf
- http://xinli88wangshangyule.br3h.com/uploads/1/3/0/4/130435562/130435562.html#spring+math+worksheet+for+kindergarten
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002ee8.bin` `866065d7495d295defe4cf0ba066740ca94c0fd4acdeb52af6aa5f9f9bb0960b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EE8	16248 bytes
`font_01_sfnt_off00004739.bin` `169b11c09216a0312981b29ce238b82816c6d942cbff32c7dc1e29f7fec40bdf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4739	8100 bytes

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