Malicious PDF — malware analysis report

Static analysis result for SHA-256 28a7a47dba89ff3c…

MALICIOUS

PDF

34.7 KB Authoring application: OpenOffice Draw
MD5: cb1f0d1202358cfa106b36ece67d454a SHA-1: 01f20ca99aee2eefd2c6628d06dcc829a2663ca2 SHA-256: 28a7a47dba89ff3cb1f7586730d4b51f214685a137b12f0f29c3df57b2986c83
150 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, many of which point to other PDF files. This behavior is indicative of a link farm designed to distribute malicious content or engage in phishing activities. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.extddivingcenter.com/uploads/1/3/0/6/130639554/pibujovuzepilemamem.pdf
    • http://mta-sts.theboroscompany.com/uploads/1/3/1/0/131069744/lemoz_sipikud.pdf
    • http://messengerflights.com/uploads/1/3/0/2/130287893/gojubas.pdf
    • http://www.mybuenosaires.org/uploads/1/3/0/4/130475959/fafajakexoxinikovado.pdf
    • http://willowwolffurnishings.com/uploads/1/3/0/5/130590741/7293008.pdf
    • http://moralguard.org/uploads/1/3/0/8/130813781/267a2f2.pdf
    • http://mail.sandiegoparanormalresearch.com/uploads/1/3/0/6/130621277/9268443.pdf
    • http://beckmannmediagroup.com/uploads/1/3/0/4/130483114/1985324.pdf
    • http://allatjanster.online/uploads/1/3/0/7/130775198/9788780.pdf
    • http://www.executivesounds.com/uploads/1/3/0/5/130550738/linujavuridaro.pdf
    • http://lemonews.com/uploads/1/3/0/5/130589285/fc6db2493e5.pdf
    • http://www.thecreditboostgurus.com/uploads/1/3/0/3/130379634/bigigidezape-zuxusosenagusar-gaxonitef.pdf
    • http://succacti.com/uploads/1/3/0/4/130476563/jusifakasajufip.pdf
    • http://youngamericasings.info/uploads/1/3/0/2/130271042/274846.pdf
    • http://www.inversityhq.org/uploads/1/3/0/6/130621959/559309.pdf
    • http://caribeard.com/uploads/1/3/0/8/130814430/64119.pdf
    • http://norwichmonsters.com/uploads/1/3/0/5/130548192/muzufazo.pdf
    • http://fnqoilsfryersolutions.com/uploads/1/3/0/6/130639407/ruboboberur-gupafi-degovite.pdf
    • http://slsfnc.com/uploads/1/3/0/6/130640126/wuwenajagojek.pdf
    • http://mialamaven.net/uploads/1/3/0/8/130874432/6462102.pdf
    • http://casemark.com/uploads/1/3/0/4/130476601/5ca6c5beebb0.pdf
    • http://hotwaterking.com.au/uploads/1/3/0/6/130621946/lufeweduted-potalalimuti-nanivebelatok.pdf
    • http://lorenfa.it/uploads/1/3/0/7/130776089/2685222.pdf
    • http://wildchild.dance/uploads/1/3/0/6/130604351/130604351.html#adobe+reader+for+windows+7+32+bit

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002554.bin
f65ba38d687e0bb74c74c8b215d520a0398406368654b89fd510fb366e85c07b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2554 7768 bytes

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