Malicious PDF — malware analysis report

Static analysis result for SHA-256 727219e5c0d3a2d4…

MALICIOUS

PDF

36.4 KB Authoring application: OpenOffice Draw
MD5: 090165b9be0f755146c335ad9bce7223 SHA-1: 960ea06757870c6bd212c4d2faae7dac08163ad0 SHA-256: 727219e5c0d3a2d44d8c045dfd6fce78ce19c8663c4a1c0a4304313ea7267a44
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. This suggests a tactic to manipulate search engine results or to distribute a large volume of potentially malicious PDF files. The ML classifier and ClamAV also strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall-7605656-0. No scripts were extracted from this sample.

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://melindaweathersby.com/uploads/1/3/0/6/130639418/fibolar_xamiwozufezur_voderoxi.pdf
    • http://www.gannoneco.ie/uploads/1/3/0/7/130775056/5048490.pdf
    • http://fotograficsart.com/uploads/1/3/0/5/130589338/6327815.pdf
    • http://greatamericanflowers.com/uploads/1/3/0/5/130588639/5834f8e7a7e.pdf
    • http://securityheadquarters.com/uploads/1/3/0/7/130739810/a1f8fb203725.pdf
    • http://casachurba.com/uploads/1/3/0/3/130312957/nonikiredapuv.pdf
    • http://www.taxi-world.co.uk/uploads/1/3/0/2/130291572/a74fbb8bd.pdf
    • http://chinasummercamp.org/uploads/1/3/0/4/130478307/goburegaluzub.pdf
    • http://tigerprairie.com/uploads/1/3/0/2/130289503/750e2.pdf
    • http://alphamechanic.com/uploads/1/3/0/2/130270742/tobinenadafusu.pdf
    • http://myroyalorganics.com/uploads/1/3/0/6/130621285/4791444.pdf
    • http://veraspencer.com/uploads/1/3/0/4/130435635/d99e841d56d0b.pdf
    • http://ahstigerband.org/uploads/1/3/0/4/130483673/bomopikisafux.pdf
    • http://sirkkupeltolaagengy.com/uploads/1/3/0/4/130489346/d381a5e5d62397.pdf
    • http://theashmoon.com/uploads/1/3/0/6/130603931/6646450.pdf
    • http://metrogovernance.com/uploads/1/3/0/5/130539759/9298682.pdf
    • http://sheffieldcctvsystems.com/uploads/1/3/0/6/130621593/mukozor-juxaseso.pdf
    • http://cldqe.bpmtc.com/uploads/1/3/0/4/130476276/130476276.html#reading+comprehension+strategies+sheena+cameron

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b9.bin
6e9fc2a65691a079ae17a964c802b53505ab709e4042d16f697c0914846df5fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32B9 7632 bytes

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