Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c8d492bd79ca981…

MALICIOUS

PDF

38.3 KB Authoring application: Smallpdf Desktop
MD5: 9a8fb38826b13b2445cf4b765aceaa87 SHA-1: e74918ebdf7a445709beb0b427eaeb814572faae SHA-256: 8c8d492bd79ca981a7e583947243e41dcddfec2c18d11775a4f7eb29f888c717
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files hosted on different domains. This suggests a phishing or SEO manipulation attack. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to traffic redirection or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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://morrisboydphotography.com/uploads/1/3/0/5/130538986/keguvanumitibag-lerejur.pdf
    • http://hostmaster.marginet.be/uploads/1/3/0/7/130775622/tuvalat.pdf
    • http://thestandguild.com/uploads/1/3/0/3/130323526/wuvedugozozafuk_logakufev.pdf
    • http://mta-sts.jenmalibu.com/uploads/1/3/0/6/130604311/050637150.pdf
    • http://ooredoopalestine.net/uploads/1/3/0/2/130289682/3087506.pdf
    • http://www.abestfriendofgod.com/uploads/1/3/0/8/130813855/sobafevu-jifepetuxe-sedidaderugik.pdf
    • http://tcca.shop/uploads/1/3/0/4/130476573/pumudapoz-jikipo.pdf
    • http://ekajaparidze.com/uploads/1/3/0/7/130775076/jeviwudojukas.pdf
    • http://dobryakkot.site/uploads/1/3/0/7/130775279/jozewokabigopamip.pdf
    • http://realmighty.com/uploads/1/3/0/5/130541073/bibudaporodunapakeda.pdf
    • http://eggphilly.us/uploads/1/3/0/4/130488542/577a6.pdf
    • http://lillauras.com/uploads/1/3/0/8/130814143/7861675.pdf
    • http://monkeysz.xyz/uploads/1/3/0/5/130590391/tewidagogoximef-vevomawogiduv-miguji-pukefi.pdf
    • http://superiorcouplingssealants.com/uploads/1/3/0/7/130738946/jozonilurafesirun.pdf
    • http://orangecountybestwindowtinting.com/uploads/1/3/0/7/130739387/lajikarapesamimimezi.pdf
    • http://liquidreiki.net/uploads/1/3/0/2/130270823/8a646.pdf
    • http://humptybumptybubble.com/uploads/1/3/0/5/130590186/6215ca4b5b4.pdf
    • http://whitestonecloud.com/uploads/1/3/0/8/130874391/jutusamag.pdf
    • http://alexismmillerlaw.com/uploads/1/3/0/5/130540453/92e0f33639.pdf
    • http://ogdentowingservice.com/uploads/1/3/0/4/130476216/mejujada.pdf
    • http://pinnb.slpny.com/uploads/1/3/0/5/130539114/130539114.html#redemption+song+fingerstyle+tab+pdf
    • http://hostmaste

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c1e.bin
cd8544640cf01ed249d8355c7f185ecf5e49a6da1c1b19da9f97f0f6860f739f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C1E 7832 bytes

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