Malicious PDF — malware analysis report

Static analysis result for SHA-256 34cc4baa4ef8bdad…

MALICIOUS

PDF

34.0 KB Authoring application: Nitro PDF
MD5: 98466c1086f65f10ac403ebcf0e321a8 SHA-1: 259e2a39bc6d188410f4903283be4cb040a2a166 SHA-256: 34cc4baa4ef8bdad077e0055b28e44625d7b7dadf602a5db208c79dcc55449fe
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a link farm and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The embedded document body text is heavily corrupted, but the presence of numerous external PDF links strongly suggests a malicious intent, likely for SEO spam or to redirect users to phishing sites. The primary attack pattern involves leveraging a large number of external links to obscure the malicious destination.

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://digitalmarketing.wiki/uploads/1/3/0/6/130603903/e305c983c549.pdf
    • http://www.teacherretention.net/uploads/1/3/0/2/130271177/6c080b4923b1.pdf
    • http://www.agtaggartltd.com/uploads/1/3/0/5/130550679/kojudawakovuxap.pdf
    • http://getitgatorauto.com/uploads/1/3/0/3/130312925/6f897.pdf
    • http://mychangingthenarrative.com/uploads/1/3/0/7/130739037/tefaxibilubo-zewagolesox-rasuf-gufulefuguja.pdf
    • http://snowbirdhomemanagementservices.net/uploads/1/3/0/5/130551708/bojomuboxi.pdf
    • http://www.umabrand.com/uploads/1/3/0/4/130476503/dunegipi_fulesatanipad.pdf
    • http://ifidireland.com/uploads/1/3/0/5/130551615/sowesotax-texaw.pdf
    • http://www.lapocketphotographer.com/uploads/1/3/0/2/130273766/ratajusotave-wijemaregasubep-pesujeteba-bowenafop.pdf
    • http://neslle.com/uploads/1/3/0/7/130739093/tuxewizeri.pdf
    • http://azaharaong.com/uploads/1/3/0/5/130542968/pedizoz.pdf
    • http://startmysoulbasedjobsearch.com/uploads/1/3/0/8/130874384/510286.pdf
    • http://judgeammendola.com/uploads/1/3/0/6/130604575/9e9971857e313.pdf
    • http://newenglandpowerlight.com/uploads/1/3/0/8/130874257/rufalinuz.pdf
    • http://anuciapather.com/uploads/1/3/0/5/130589050/168553.pdf
    • http://summitphotographer.com/uploads/1/3/0/5/130550929/3977060.pdf
    • http://qbedsandbedding.com/uploads/1/3/0/7/130775737/matuzekibipuzup.pdf
    • http://ndtasanantonio.org/uploads/1/3/0/5/130551543/56598e7ac6e1f.pdf
    • http://shop.middletennesseeflyfishing.com/uploads/1/3/0/5/130541271/f22453604867.pdf
    • http://caribbluecharters.com/uploads/1/3/0/5/130590229/4276355.pdf
    • http://arkveterinaryurgentcare.com/uploads/1/3/0/7/130775676/382586.pdf
    • http://kimholtandcompany.com/uploads/1/3/0/5/130539645/giruxutel.pdf
    • http://conscience-ai.com/uploads/1/3/0/7/130739098/9a358473195.pdf
    • http://man.mediutopia.com/uploads/1/3/0/4/130478868/130478868.html#surah+mulk+full+with+urdu+translation
    • http://kimholtandcompany.com/uploads/1/3/0/5/130539645/giruxu

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002594.bin
bfb7566d1b34ffbeefd52257053212eeca26474debff01701d16f1232a3bc7c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x2594 6632 bytes