Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8a8eb6c765fc3f8…

MALICIOUS

PDF

39.4 KB Authoring application: Nitro PDF
MD5: 59dadf18a8eb98d78737c159e7641b5a SHA-1: 60a5001f18c3b211cbdf9568a19bb6ea37161982 SHA-256: f8a8eb6c765fc3f8e688fc091f8f86f7fb46669a7e87d9664979b3006eb53ce0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, each hosting a PDF file. This pattern is commonly used for phishing campaigns or to distribute further malware. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the malicious classification. No scripts were extracted from this sample.

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://avvluciamarinoni.com/uploads/1/3/0/3/130313440/81509ef58b1.pdf
    • http://midilaser.com/uploads/1/3/0/2/130289222/nujive.pdf
    • http://victorianfusion.com/uploads/1/3/0/6/130621857/2aa85474.pdf
    • http://dostal.at/uploads/1/3/0/6/130639767/forelasopetawavidebo.pdf
    • http://starstuffwithstuartgary.com/uploads/1/3/0/6/130605498/jivelo.pdf
    • http://tudoparafoto.com/uploads/1/3/0/8/130814310/samogegimaso.pdf
    • http://shhugarshop.com/uploads/1/3/0/7/130775726/4693503.pdf
    • http://christilsed.com/uploads/1/3/0/4/130476748/tamonobepepokotenilu.pdf
    • http://mta-sts.mail.ronukrainetz.com/uploads/1/3/0/6/130639436/kivexuf-nogidawap-wavabowa-kiberunugakow.pdf
    • http://riverglenwealthcounselors.com/uploads/1/3/0/8/130814126/lasinimopuniregabi.pdf
    • http://louisvillemoldsolutions.com/uploads/1/3/0/6/130603867/tozole.pdf
    • http://babiesbreath.com.au/uploads/1/3/0/2/130289433/599340.pdf
    • http://socalseas.com/uploads/1/3/0/8/130814303/dusopotapasigi.pdf
    • http://merrifieldseminar.com/uploads/1/3/0/6/130621781/mekezakex.pdf
    • http://desatascossantfeliudellobregat.com/uploads/1/3/0/5/130551185/lupugutarigef-puvokawumita-fumawip.pdf
    • http://rever-energy.net/uploads/1/3/0/6/130620751/130620751.html#safety+coordinator+job+description+in+india

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040eb.bin
d0c359371ec4ccdeaac208a001ea95bf32955084b2febc7663b74d986fe8c06b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40EB 7412 bytes

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