Malicious PDF — malware analysis report

Static analysis result for SHA-256 7231e5255100ef13…

MALICIOUS

PDF

58.1 KB Authoring application: PDFBox First seen: 2020-09-24
MD5: 35951ecbac4864b30c0a6188929993a2 SHA-1: af5cba5ac320b9c7145dc09b66f64a4ba678a950 SHA-256: 7231e5255100ef131195ae182884e8f24c8efd73f124b29b9e2146944093b582
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall, suggesting a phishing or malicious redirection intent. The document body itself is heavily obfuscated and contains references to the linked URLs, reinforcing the idea that the primary purpose is to direct users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 http://posabo.vetrics.ru/uploads/2020/01/28/ledexolomuroz_lirugekitebaxo.pdf In PDF document text
    • http://ninaschjeide.net/uploads/1/3/0/4/130435821/furobep_lovafojogusuk_xalijiwubujuwiv_xepiketakune.pdfIn PDF document text
    • http://111-pod.site/uploads/1/3/0/5/130545043/poziper_bofizebope_vabobesog.pdfIn PDF document text
    • http://aluckyhorseshoe.com/uploads/1/3/0/5/130545827/2491257.pdfIn PDF document text
    • http://moretonislandfishingcharters.com/uploads/1/3/0/5/130540699/rixejiw.pdfIn PDF document text
    • http://nswminiaturepony.com.au/uploads/1/3/0/6/130621392/renewumoz_gelagimo_febuturubogozu_jasudilo.pdfIn PDF document text
    • http://jenn4judge.com/uploads/1/3/0/3/130323407/togapiwupebanari.pdfIn PDF document text
    • http://meshayla.com/uploads/1/3/0/5/130543665/130543665.html#sex+and+chopsticks+iiIn PDF document text
    • http://linux.thai.net/projects/fonts-tlwgIn PDF document text
    • http://www.thaitux.infoIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://www.adobe.com/).NotoIn PDF document text
    • http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
    • http://scripts.sil.org/OFLNotoIn PDF document text
🗂 Part of campaign: delgiacconeuroarttherapy.com 17 samples

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000125d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125D 9260 bytes
SHA-256: 869f90fb915504bcb3a65b0593d1669c3655cfb6c13112979f6a0a6cbc6388a4
font_01_sfnt_off00004d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D76 16888 bytes
SHA-256: 598b436daaf3d122157f8aae4d95cb5f98998d7541b527c84c982bd0659a624f
font_02_sfnt_off000065a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A8 16048 bytes
SHA-256: 7241b40c363548c1b38fc59c10bbaabf9f3d92e3c32c88d159f9a1b17b3ad3f3
font_03_sfnt_off00008a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4F 12904 bytes
SHA-256: db1833ed97c4ba811235a8ec13c8c2787dd2bf504f014727a069b86df5d3a89b

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