Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9cd2cd2b140fa8…

MALICIOUS

PDF

84.2 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: c1bf3508f3983c0c6e54d3dd1cabbc94 SHA-1: 2a63096e8f1b055cc93072508e0e5fc451d498df SHA-256: 3a9cd2cd2b140fa8c7a5254aadc6fbfbe1ddb8033ad355d8e1f8a81b87f6285b
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various external PDF files. The ClamAV detection and ML classifier strongly indicate maliciousness. The embedded URLs are likely used to redirect users to malicious content or for SEO poisoning. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://accordingtoiris.com/uploads/1/3/0/5/130551064/3eb73e22420.pdf In PDF document text
    • http://nicolebarry.ca/uploads/1/3/0/5/130588786/waxopozetiva_juzozuzuxe.pdfIn PDF document text
    • http://adfs.pactera.co/uploads/1/3/0/8/130874667/vasinenag-fojurowu.pdfIn PDF document text
    • http://naturalhand.net/uploads/1/3/0/7/130739169/f246946ae423.pdfIn PDF document text
    • http://josephberry.co.uk/uploads/1/3/0/2/130287279/lizukokolusutadide.pdfIn PDF document text
    • http://orlandoforeclosurelaw.net/uploads/1/3/0/5/130588499/4784376.pdfIn PDF document text
    • http://johndcoates.com/uploads/1/3/0/5/130539612/tajavadafuw.pdfIn PDF document text
    • http://clontarfbuildinghistory.com/uploads/1/3/0/6/130639246/gatatalowub.pdfIn PDF document text
    • http://napervillespa.net/uploads/1/3/0/6/130621015/tababagaxakekew.pdfIn PDF document text
    • http://yasminali.com/uploads/1/3/0/7/130739381/7193113.pdfIn PDF document text
    • http://rewindind.com/uploads/1/3/0/4/130489038/4212216.pdfIn PDF document text
    • http://midnighttokerstore.com/uploads/1/3/0/2/130289189/wuredigujisip_rasibufodowop.pdfIn PDF document text
    • http://artcenterla.com/uploads/1/3/0/7/130775969/e42efba4.pdfIn PDF document text
    • http://imaginecandystore.com/uploads/1/3/0/7/130738633/87de0d0c0d92.pdfIn PDF document text
    • http://davinciartistsgallery.com/uploads/1/3/0/5/130551418/857a00.pdfIn PDF document text
    • http://taiyangchengjiawangbaosha.br3h.com/uploads/1/3/0/4/130488833/130488833.html#namaz+ka+tariqa+in+roman+englishIn 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 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
stream_005_off0000ec38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xEC38 22496 bytes
SHA-256: 21e5ade42609d6b4155cca808bea968bac086a422787b1fa57e34578c4820c35
font_00_sfnt_off0000112d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112D 8188 bytes
SHA-256: b0c1beae2d9015b08e714925c6cbe2f3d9273785fd926c045b3783c37a5e9687
font_01_sfnt_off0000b85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB85B 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
font_02_sfnt_off0000c3e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3E0 15496 bytes
SHA-256: d51f1efab3e926dd9ccee183b1e7575a9e0e2da2c681b82dfb6038053c9dcd0a

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