Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e151bd189f9f1ce…

MALICIOUS

PDF

36.2 KB Authoring application: OpenOffice.org
MD5: d6c020bbc1c19b93348caceeff4ffae2 SHA-1: 33b5df0c62952c8aed58afee7363fdba8200ff5a SHA-256: 3e151bd189f9f1ceb8cb93dfa0a43ff7a7c9d0dad91e66a9810c7c21630a3c0a
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. No scripts were extracted from this sample, so the primary attack vector appears to be the embedded links.

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://pensionsonline.info/uploads/1/3/0/6/130605299/58e32602528f3.pdf
    • http://logoless.net/uploads/1/3/0/6/130640047/suxisisowasugo-pudaxamutaku-roxuxuzije-tekupona.pdf
    • http://friendsofengineering.com/uploads/1/3/0/6/130604856/ca8732cce4.pdf
    • http://cpanel.gypsyjamesboutique.com/uploads/1/3/0/7/130775678/6552573.pdf
    • http://coopermanselfdefense.com/uploads/1/3/0/2/130291575/cffc0.pdf
    • http://nguyentandung.net/uploads/1/3/0/5/130539840/pofoliwowigisevisix.pdf
    • http://www.gibbsmanagementgroup.com/uploads/1/3/0/3/130323417/1665618.pdf
    • http://spartanburginsurance.net/uploads/1/3/0/3/130323115/cc22fc9bbbed9.pdf
    • http://mutualhousingny.net/uploads/1/3/0/4/130476611/5444665.pdf
    • http://thestorystudiohk.com/uploads/1/3/0/4/130435872/dexisasiraz-mivodi-sowajifenap-bezus.pdf
    • http://www.digginuppodcast.com/uploads/1/3/0/5/130588328/fixisabegogoxijeda.pdf
    • http://usafachapters.org/uploads/1/3/0/3/130379158/dibasejodaj_mubane_loviguzumas_dejafumezopixu.pdf
    • http://www.valdiborgazzette.com/uploads/1/3/0/7/130739265/romapawowenesuker.pdf
    • http://bitwiseapps.com/uploads/1/3/0/7/130775279/biwewowigorilu_dilixamul_sekuwi.pdf
    • http://ontargetgunworks.com/uploads/1/3/0/7/130775180/7501607.pdf
    • http://x0940502xstreamtravel.xsideas.com/uploads/1/3/0/6/130620321/130620321.html#ethanoic+acid+ph
    • http://thestorystudiohk.com/uploads/1/3/0/4/130435872/dexisa

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc8.bin
93a70863e6f3435392e47dd3f849e892be700cd3e8c55045ff05686d8222470c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC8 8912 bytes

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