Malicious PDF — malware analysis report

Static analysis result for SHA-256 8749f07851335a63…

MALICIOUS

PDF

54.5 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: 0bf8452b553907f118dd5d5d4b231bb6 SHA-1: cec298d8f2199edba19dfb510a7f83883f5af137 SHA-256: 8749f07851335a637a13025b3dd5de4574ffbdaeaaf303aa976b8056a9e63d77
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, indicating a link farm designed to distribute malicious content. ClamAV detection and ML classification strongly suggest malicious intent. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

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://johngeneralconstruction.com/uploads/1/3/0/4/130476263/ca4cfd64.pdf In PDF document text
    • http://www.jmgardenservices.com/uploads/1/3/0/6/130640009/3688529.pdfIn PDF document text
    • http://steppingstonesccod.org/uploads/1/3/0/3/130323996/suvumi.pdfIn PDF document text
    • http://makeitwordpress.com/uploads/1/3/0/2/130287808/1125240.pdfIn PDF document text
    • http://pnxpartners.com/uploads/1/3/0/5/130551064/c7ba9.pdfIn PDF document text
    • http://nwspecialtylumbermill.com/uploads/1/3/0/5/130588861/a38aa.pdfIn PDF document text
    • http://befitish.com/uploads/1/3/0/7/130738731/luxab.pdfIn PDF document text
    • http://www.oklahomacitybulldogclub.org/uploads/1/3/0/4/130483940/juwovu_rixapotuxiv_kivugudoj_wumidabe.pdfIn PDF document text
    • http://rhiannonlisettehenry.com/uploads/1/3/0/3/130323593/3613126.pdfIn PDF document text
    • http://rosadosastros.com/uploads/1/3/0/6/130620343/bupibaxixufotow.pdfIn PDF document text
    • http://katiaponomareva.com/uploads/1/3/0/5/130551518/130551518.html#old+ncert+medieval+india+pdf+in+hindiIn 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_off000049c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49C0 1388 bytes
SHA-256: 1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
font_01_sfnt_off0000539c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x539C 16392 bytes
SHA-256: 4dbdf301b54db8e1d583543efe45aa5675f6e0882a6a16e2429b4c2140da7b01
font_02_sfnt_off0000801c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x801C 7784 bytes
SHA-256: e21ad1c4041266553322d80b52103041139e0344a71bd7865ed8ee2beb2017e5

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