Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59efc5bc731a342…

MALICIOUS

PDF

65.4 KB Authoring application: pdf-parser First seen: 2020-09-24
MD5: 3428d0ab13bfc16ab5255549a624bb7a SHA-1: d6732a8cea9eccface53bba07ea67c08e515e76d SHA-256: d59efc5bc731a342da04050278c3f5bff6c3575d7c20c79a0743ef40cb40579c
160 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, indicative of a link farm or SEO abuse. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the structure and embedded URLs suggest the document is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ourchildrensfund.com/uploads/1/3/0/2/130289789/wiruxumiluzojezuf.pdf In PDF document text
    • http://meredithkaler.com/uploads/1/3/0/4/130435939/3457777.pdfIn PDF document text
    • http://localbitprice.com/uploads/1/3/0/2/130288565/cc71111.pdfIn PDF document text
    • http://modtone.net/uploads/1/3/0/5/130541688/df3376f8785285e.pdfIn PDF document text
    • http://nicolas-rigaux-photographe.com/uploads/1/3/0/6/130640114/a6458c2e.pdfIn PDF document text
    • http://cxmockup.com/uploads/1/3/0/5/130590392/5874940.pdfIn PDF document text
    • http://sassyarabia.com/uploads/1/3/0/3/130379412/64b885f69e1af8.pdfIn PDF document text
    • http://democraticabsentee.com/uploads/1/3/0/5/130539319/775bd5e0e3e.pdfIn PDF document text
    • http://rochestersportsfan.com/uploads/1/3/0/2/130271121/34430.pdfIn PDF document text
    • http://witteringsfitness.com/uploads/1/3/0/4/130435589/1352759.pdfIn PDF document text
    • http://thehnossaproject.com/uploads/1/3/0/4/130436258/130436258.html#my+talking+angela+app+hackIn 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

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_off0000128a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A 9352 bytes
SHA-256: e99ff661966b9fed3168678b412a767876cfee8a597221bd97d1db12b0156a16
font_01_sfnt_off00007ee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE9 15760 bytes
SHA-256: 343212a95d67edcdbb4b508d98a07cb73d2f686ed65ff985783e27f3dfbed913
font_02_sfnt_off0000a241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA241 16592 bytes
SHA-256: dd60360f9d05078ed1520c9f690795a4bcfbb5809579fdd3dae8d6a0e6023a61
font_03_sfnt_off0000b85e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB85E 8356 bytes
SHA-256: 558773724876b0a668b4e0d5056e3f94e314b35be99c5fc4bb7d9ec52e15f699

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