Malicious PDF — malware analysis report

Static analysis result for SHA-256 8820aaa72b1a0635…

MALICIOUS

PDF

40.5 KB Authoring application: Mobipocket Creator First seen: 2020-09-24
MD5: a1694cca27d91e0b9241a767c9e2fe4e SHA-1: 191f8b49f763f060fdc34efe989f11fd38ecabdd SHA-256: 8820aaa72b1a063549b9e3a88113f6d8aac875cf7d85e0d59ec4ed4cb06e3fff
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the sheer volume of linked PDFs suggests a coordinated effort to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://bughunters.eu/uploads/1/3/0/3/130323593/d9ac7e8cc.pdf In PDF document text
    • http://holyfamilylt.com/uploads/1/3/0/6/130604303/787919.pdfIn PDF document text
    • http://prabhbroker.com/uploads/1/3/0/5/130542758/3426647.pdfIn PDF document text
    • http://turkeycreekretrievers.com/uploads/1/3/0/5/130551962/6920408.pdfIn PDF document text
    • http://adrianbyrdcounseling.com/uploads/1/3/0/4/130488294/6a630eb0b6d.pdfIn PDF document text
    • http://nevadalawguide.com/uploads/1/3/0/7/130775589/devuvojibif_mazefojuzal.pdfIn PDF document text
    • http://www.mgracetransitions.com/uploads/1/3/0/3/130313212/c9437cbfa.pdfIn PDF document text
    • http://annalyzethat.com/uploads/1/3/0/4/130436519/xivomifopeg_bowoxex.pdfIn PDF document text
    • http://basicwallpapers.com/uploads/1/3/0/2/130289333/nevonefifa.pdfIn PDF document text
    • http://jasonrafferty.com/uploads/1/3/0/6/130639244/3673812.pdfIn PDF document text
    • http://residencialnovotempo.net/uploads/1/3/0/6/130621058/3650122.pdfIn PDF document text
    • http://budgetboutiquebeds.com/uploads/1/3/0/2/130288753/vosemovefuraje.pdfIn PDF document text
    • http://noetrophyproperty.com/uploads/1/3/0/2/130274305/todidotaropumi.pdfIn PDF document text
    • http://alexlashology.com/uploads/1/3/0/4/130483118/fca5b5b8facc4.pdfIn PDF document text
    • http://rockstarsproductions.com/uploads/1/3/0/7/130776724/xemel_fizupepo_kupadoduboxo_lifiwijebep.pdfIn PDF document text
    • http://micahandersonmfti.com/uploads/1/3/0/7/130776828/tokotof_wenine_firefimafivo.pdfIn PDF document text
    • http://stockmi.com/uploads/1/3/0/4/130488694/dobojasiba.pdfIn PDF document text
    • http://davidhoover.net/uploads/1/3/0/7/130738647/lixipuluxodu.pdfIn PDF document text
    • http://pierrecyr.ca/uploads/1/3/0/4/130488091/5302100.pdfIn PDF document text
    • http://danhixsonphotography.com/uploads/1/3/0/5/130551323/wowurizo.pdfIn PDF document text
    • http://midshiftmedia.com/uploads/1/3/0/3/130323478/2542690.pdfIn PDF document text
    • http://hostmaster.boultonsarenasandgallops.co.uk/uploads/1/3/0/7/130738909/5615086.pdfIn PDF document text
    • http://brandtgalleries.com/uploads/1/3/0/6/130620547/zagufuvawuk.pdfIn PDF document text
    • http://pdconnections.com/uploads/1/3/0/5/130589381/rololipa.pdfIn PDF document text
    • http://tastydairy.club/uploads/1/3/0/3/130313091/zasixafe-leginudela-bixagat-nodasefe.pdfIn PDF document text
    • http://host10.pleasingfood.com/uploads/1/3/0/9/130968962/130968962.html#natural+treatment+for+seizures+in+dogsIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3A2B 7848 bytes
SHA-256: 8dd44b9e4fb5844c26c1070a5f0e6c8ea6fbf924b49420dfaf6c18ff98b54a08

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