Malicious PDF — malware analysis report

Static analysis result for SHA-256 114ba28f25710947…

MALICIOUS

PDF

55.9 KB Authoring application: Serif PagePlus First seen: 2020-09-07
MD5: 9e20a5c49f224f0d07eb5a33077b4dd8 SHA-1: 2d11e0a6bd7f1e309fa4b96494aa763a597a81ac SHA-256: 114ba28f257109478c2324c68992ded54585aafe70a106ff499b4e7a0d2490c4
192 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a phishing lure, as indicated by the high number of embedded links to external PDF files, many of which appear to be algorithmically generated. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were extracted, the primary attack vector appears to be the redirection of users to potentially malicious content hosted on numerous domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://bgmlondon.com/uploads/1/3/0/5/130539428/f63766b81ad0.pdf In PDF document text
    • http://www.goradiocristosalva.org/uploads/1/3/0/7/130738797/9304359.pdfIn PDF document text
    • http://lingoweaver.net/uploads/1/3/0/6/130604354/3663386.pdfIn PDF document text
    • http://longnecklagooneec.com/uploads/1/3/0/3/130379063/4de6a4863115.pdfIn PDF document text
    • http://foodytees.com/uploads/1/3/0/4/130483400/6607113.pdfIn PDF document text
    • http://jamesagibson.com/uploads/1/3/0/7/130739082/8714640.pdfIn PDF document text
    • http://wojimbo.com/uploads/1/3/0/5/130540072/e5fbd8795eb.pdfIn PDF document text
    • http://admin.mountainarearesidentialfacilities.org/uploads/1/3/0/5/130589198/1106545.pdfIn PDF document text
    • http://tilevum.store/uploads/1/3/0/2/130271073/vamejadinudepemot.pdfIn PDF document text
    • http://fearlesssocial.net/uploads/1/3/0/4/130435746/vewejuvanak.pdfIn PDF document text
    • http://wcd-1199sab5.mgh-r.ch/uploads/1/3/0/6/130639959/130639959.html#polar+to+cartesian+formulaIn 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
    • 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 6

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_off00004f80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F80 16036 bytes
SHA-256: 779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
font_01_sfnt_off000063bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 3432 bytes
SHA-256: 6444857d212d59486fd2460beb5c880fa69f0bd6d5b47f81c4ff3eb2e0ed9607
font_02_sfnt_off00006ec5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC5 6644 bytes
SHA-256: 44bc507e6feece4b5ec51d67d3f3322caae0b47fa6f13d11cd391cbfb070b514
font_03_sfnt_off00008271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8271 9000 bytes
SHA-256: c2fd688be4fd0556556bd19a3369da356586f06e7af8eff8c69efeb1a36bd1fe

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