Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc438fff6ab521f…

MALICIOUS

PDF

37.1 KB Authoring application: Mobipocket Creator
MD5: a938f2ffd893e0c51fc02bbc1caf05fc SHA-1: 0d27be71d53fcca04066f0370dafe618157d1340 SHA-256: bfc438fff6ab521f9aedee474ff1bdd618de06a4afad77682565c1e7bb1d8fd3
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs, indicating a link farm likely used for phishing or malware distribution. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'SE_URGENCY_LURE' heuristic further support a phishing or malicious intent. No scripts were extracted from this sample, but the embedded URLs are the primary indicators of malicious activity.

Heuristics 4

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://themessageofnabiisa.org/uploads/1/3/0/3/130323585/5fae7.pdf
    • http://vannesaomessences.com/uploads/1/3/0/6/130639504/geligewa-bapanivexovova-dipekumumimof-zaludino.pdf
    • http://beamsvillecourier.com/uploads/1/3/0/5/130588570/114066.pdf
    • http://mta-sts.sielankastudio.pl/uploads/1/3/0/5/130588802/tewusapem.pdf
    • http://www.alma-leather.com/uploads/1/3/0/7/130739533/jubajimitakita.pdf
    • http://happybellyf2f.com/uploads/1/3/0/2/130288939/b0b0d696a75.pdf
    • http://motusbehaviors.com/uploads/1/3/0/5/130539244/e621d1f440a25.pdf
    • http://jeanbaptistevivier.com/uploads/1/3/0/7/130739260/vuwajabamojoli.pdf
    • http://www.silasstspecialists.com.au/uploads/1/3/0/8/130814349/2ff782c22dea0d4.pdf
    • http://www.meandthebabe.com/uploads/1/3/0/5/130551302/diwupakawebejikaw.pdf
    • http://aptaussieshome.com/uploads/1/3/0/6/130639310/8327515.pdf
    • http://oaklandslodgebandb.co.uk/uploads/1/3/0/6/130621980/4486136.pdf
    • http://herebeobjects.org/uploads/1/3/0/6/130604105/xixipupak.pdf
    • http://mid-americathermalimaging.com/uploads/1/3/0/4/130483576/mabubixosowub_dowok_petuzu_jipoda.pdf
    • http://aspoonfulsparkle.com/uploads/1/3/0/7/130739833/semoxemolezimuvadow.pdf
    • http://bruceou.com/uploads/1/3/0/4/130483155/9801025.pdf
    • http://austentyler.com/uploads/1/3/0/4/130488975/bisupegijubemef_tezosuzeli_davogizosazane_vesinazifuboxax.pdf
    • http://orders.carolinamikes.com/uploads/1/3/0/5/130538996/130538996.html#distinguish+between+acute+and+chronic+kidney+failure
    • https://www.healthlinkbc.ca/health-topics/aa106178

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031ce.bin
0c13adaa68ce7e17152bbb57b850e9b3546e36e4039474aa76df45f1bdb10398		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31CE 8712 bytes

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