Malicious PDF — malware analysis report

Static analysis result for SHA-256 11b5378f90bdcc35…

MALICIOUS

PDF

55.6 KB Authoring application: GIMP First seen: 2020-09-24
MD5: e9e70acdc391ad2e7c29c5253c3ed547 SHA-1: 5e99edd5604daca8c636553173e336f1e2abe9c3 SHA-256: 11b5378f90bdcc35b64edbc8c7c09f6699dcc9c43043f77217a3632884be128c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily corrupted, contains references to 'Icd 10 bilateral shoulder pain' and mentions 'GIMP', suggesting a potential lure to disguise the malicious nature of the document. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or redirecting users to malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://myprettypalace.com/uploads/1/3/0/2/130270923/pazorop_vopetoxexojijo_golajesebino_xudusetafonozo.pdf In PDF document text
    • http://pyschicnetwork.live/uploads/1/3/0/6/130604803/7505694.pdfIn PDF document text
    • http://londyn.letenky-sky.sk/uploads/1/3/0/7/130776069/tuxafudekunizi.pdfIn PDF document text
    • http://sugarlandpremierroofing.com/uploads/1/3/0/6/130620480/08129ef4a190bd.pdfIn PDF document text
    • http://thehnossaproject.com/uploads/1/3/0/6/130604650/zusedafemine.pdfIn PDF document text
    • http://nobuhotelriyadh-fullsite.devsite-1.com/uploads/1/3/0/4/130483860/130483860.html#icd+10+bilateral+shoulder+painIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn 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_off000010bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC 8136 bytes
SHA-256: d478bb0dd8df9fe26837bfd49abf30ece02c7679a012e5cb847b92c8545bd7de
font_01_sfnt_off00008ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD8 16092 bytes
SHA-256: c6c28444bcd94379862b6cc7f8cfcdbcdaeb026857ccdb099d87626a561054a6
font_02_sfnt_off00009f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4D 2652 bytes
SHA-256: 1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838

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