Malicious PDF — malware analysis report

Static analysis result for SHA-256 25432fa9a8862888…

MALICIOUS

PDF

67.3 KB Authoring application: PDF Studio First seen: 2020-09-24
MD5: e90be526a9381c2f5748bf2a74657f13 SHA-1: 1571249b4bb7812e5cb6e04fe5d4387189f7feb1 SHA-256: 25432fa9a8862888671ea211a5fa8393464c0fd3364cdd3cf5138c04effddd3c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of embedded URLs pointing to other PDF files, indicating a link farm or redirection strategy. This is supported by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection also confirm maliciousness. The primary intent appears to be SEO manipulation or distributing further malicious content via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 https://peduveje.weebly.com/uploads/1/3/0/5/130551986/719565.pdf In PDF document text
    • http://desertside.com/uploads/1/3/0/2/130288483/josisidag.pdfIn PDF document text
    • http://petchow2u.com/uploads/1/3/0/3/130313173/b4534fb3048.pdfIn PDF document text
    • http://propertysitters.ca/uploads/1/3/0/5/130539881/moxozevixotino_revukosisi_xateb_kusuxumafi.pdfIn PDF document text
    • http://azzurrawebart.com/uploads/1/3/0/2/130288456/taduwesagepoki.pdfIn PDF document text
    • http://playbash.com/uploads/1/3/0/7/130776716/f234731d2ee5c.pdfIn PDF document text
    • http://michellecmcadams.com/uploads/1/3/0/3/130379741/57a46c8e2d8e59c.pdfIn PDF document text
    • http://n715dp.com/uploads/1/3/0/5/130544591/sefizigagi-boxinilu-tuliga.pdfIn PDF document text
    • http://mystiquemultimedia.weebly.com/uploads/1/3/0/2/130288551/sarebowaserafusevo.pdfIn PDF document text
    • http://norwichladsabc.co.uk/uploads/1/3/0/5/130550792/mekufotuzafaf.pdfIn PDF document text
    • http://misssupremepurityqueen.com/uploads/1/3/0/5/130588796/130588796.html#good+night+images+for+whatsapp+freeIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1495 7856 bytes
SHA-256: e6960247c714cc1e281a05ecbf2b8aa29aea904a4c25a17914f636e51ed6fe47
font_01_sfnt_off0000a5fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5FE 1388 bytes
SHA-256: 1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
font_02_sfnt_off0000af83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF83 15380 bytes
SHA-256: 0fc0bbdcbb97cd2039fef3b69f4b2f408419e21d123ad94f843220fa37d2b3bf

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