Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3e344af994c33a8…

MALICIOUS

PDF

68.7 KB Authoring application: SWFTools
MD5: b2a197d5cea4301381a64c62aca2150c SHA-1: 1003c03b3ea71f2ed795dc0e97e893ad5cfc7058 SHA-256: a3e344af994c33a8a8746034fde5386aae2298171b159387b2506b52bf56f222
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, for malicious content. The critical PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, with the primary domain being umutsulun.com. This suggests the PDF is designed as a link farm to distribute malicious content or conduct phishing attacks. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://umutsulun.com/uploads/1/3/0/7/130775840/69413.pdf
    • http://73forms.com/uploads/1/3/0/5/130539315/sasalalavusov.pdf
    • http://www.creativosfilmsproduccionesny.com/uploads/1/3/0/6/130604805/7891566.pdf
    • http://tcinh.com/uploads/1/3/0/2/130287898/zowomalezujuxim.pdf
    • http://guysatwork.com/uploads/1/3/0/5/130588360/vabovijegorebi_vijabetuzin.pdf
    • http://dirafoundation.com/uploads/1/3/0/7/130776490/8407831.pdf
    • http://ninamarcela.com/uploads/1/3/0/9/130969483/fitunigotupokok.pdf
    • http://unhappinessisachoice.com/uploads/1/3/0/6/130620853/6847255.pdf
    • http://esgpedia.com/uploads/1/3/0/5/130551162/1dc2b2e2d.pdf
    • http://cannablissfest.com/uploads/1/3/0/7/130776006/1298108.pdf
    • http://mta-sts.mail.brownswoodnursery.com/uploads/1/3/0/8/130874175/gopabipuminuw.pdf
    • http://masonicformation.com/uploads/1/3/0/4/130483645/xamibamamolubomovu.pdf
    • http://goget.social/uploads/1/3/0/7/130739366/supakotekimidof.pdf
    • http://aucklandpolo.com/uploads/1/3/0/4/130477026/0bf4bf9679150.pdf
    • http://1sx.brdge.org/uploads/1/3/0/9/130969066/130969066.html#quadratic+stark+effect+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013a8.bin
c6fa498025428fa31c878aee954f6c212d80576ad531385367824d310af60781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A8 10352 bytes
font_01_sfnt_off0000b649.bin
b073be8c4178f671ac4e91d635b04e89be9cec15ec856be6923b41b0b2ee7387		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB649 16152 bytes
font_02_sfnt_off0000cb4d.bin
06f6108e6ab56dc9507068460a375dcbd4808d05ae59e9069dfe2163f6879ea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB4D 4776 bytes

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