Malicious PDF — malware analysis report

Static analysis result for SHA-256 1316a5b3eab99503…

MALICIOUS

PDF

40.0 KB Authoring application: Poppler-utils
MD5: 8c89f998f495a56ff31d61c60136a3e8 SHA-1: 4fb44dcfacfc34448ab3a7ad61a4fd7d4b28f642 SHA-256: 1316a5b3eab995036c68586c44837e240f10a26b55c5938903ae53b9172cc5c9
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. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a high ML classifier score further support its malicious nature. The document body is heavily obfuscated and unreadable, preventing a deeper analysis of its specific intent beyond the link farm.

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://michelejoyjewelry.com/uploads/1/3/0/5/130543262/95d2c465785a1.pdf
    • http://quinne.net/uploads/1/3/0/4/130436439/69a728c3eb6824.pdf
    • http://softwarehabits.net/uploads/1/3/0/6/130621108/sirobasow.pdf
    • http://annegilmanart.com/uploads/1/3/0/5/130551378/3966964.pdf
    • http://thecountryovenbakery.com/uploads/1/3/0/6/130639068/8187889.pdf
    • http://happy-dinosaur.com/uploads/1/3/0/5/130543190/40c2e6a9972ed.pdf
    • http://nextivatrainingteam.com/uploads/1/3/0/3/130323672/2e9d9b56025.pdf
    • http://red-poker.net/uploads/1/3/0/2/130272554/3550248.pdf
    • http://aldreaalien.com/uploads/1/3/0/5/130589194/lapexatak.pdf
    • http://momentumva.com/uploads/1/3/0/5/130588591/numikopi_sigul.pdf
    • http://karoovillage.com/uploads/1/3/0/6/130604205/ef550438e3.pdf
    • http://laparoscopic.info/uploads/1/3/0/6/130639084/bovevebidim.pdf
    • http://catawbapress.com/uploads/1/3/0/2/130289796/7526474.pdf
    • http://ministrystudy.org/uploads/1/3/0/6/130621178/e35c0a5a7.pdf
    • http://aquaponicsoutlet.com/uploads/1/3/0/4/130435680/5855f2451.pdf
    • http://financialdistrictmothers.com/uploads/1/3/0/7/130776358/a534c.pdf
    • http://wmscomputing.com/uploads/1/3/0/2/130289282/6961476.pdf
    • http://pingjiazuihaodeqipaiyouxi.br3h.com/uploads/1/3/0/7/130739878/130739878.html#surah+yasin+mp3+download+by+mishary+rashid

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003ff9.bin
b17dc83a3ccd34f317d40f001e8ff94547e74d3a12a2f11b2b94ecf468005405		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3FF9 7920 bytes

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