Malicious PDF — malware analysis report

Static analysis result for SHA-256 627eb339b05ffe89…

MALICIOUS

PDF

47.2 KB Authoring application: OpenOffice Draw
MD5: d580f02339430dd52ad79f1b1543118d SHA-1: 5abb0013eab0f230d9005589e8753cb3f2b70020 SHA-256: 627eb339b05ffe895ef5d469649da5a83a5a5efdd991f1c1a25ca7a1b1672d45
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF files. This behavior is indicative of a phishing or SEO spam campaign, aiming to drive traffic to malicious or misleading content. The ML classifier and ClamAV detection further support its malicious nature, classifying it as phishing-related malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://1504magaz.fun/uploads/2020/01/28/706997.pdf
    • https://gepobeveso.weebly.com/uploads/1/3/0/4/130435751/3913081.pdf
    • http://aventusinflatables.com/uploads/1/3/0/6/130604715/597fae7c42.pdf
    • http://sefite.dataerudite.com/uploads/2020/01/28/tosuzomitide_bezonogunafow.pdf
    • http://slmshopp.ru/uploads/2020/01/28/sisakeba.pdf
    • https://zupidukajemisu.weebly.com/uploads/1/3/0/5/130590503/koxuz.pdf
    • http://xob.migrascope.su/uploads/2020/01/27/vawupowisezenulod.pdf
    • https://sikakebemi.weebly.com/uploads/1/3/0/4/130476859/dcd5e5d.pdf
    • http://borepodur.tmass.online/uploads/2020/01/28/7291787.pdf
    • http://tifoju.militariorgucoz.ru/uploads/2020/01/29/816f7c785d.pdf
    • http://xoduvolu.lookru.ru/uploads/2020/01/27/de825.pdf
    • https://wuzosijufereri.weebly.com/uploads/1/3/0/6/130604702/mipenazolur.pdf
    • http://lagi.kkylosov.ru/uploads/2020/01/29/5584592.pdf
    • http://luminousoc.com/uploads/1/3/0/4/130435652/6953841.pdf
    • http://interdependence.info/uploads/1/3/0/4/130488429/givowin.pdf
    • http://runul.pulkovo3.info/uploads/2020/01/28/db698a891a07.pdf
    • https://jakutimeru.weebly.com/uploads/1/3/0/5/130590159/guferumojakuvu.pdf
    • http://minnesotaprayerhotline.org/uploads/1/3/0/4/130435644/tijavaj.pdf
    • http://mobilecraftbottlingcompany.com/uploads/1/3/0/6/130621673/6124792.pdf
    • http://gex.raz-ezzhaya.ru/uploads/2020/01/29/timesepi-kavebebede-lofegoromotek.pdf
    • http://number120designs.com/uploads/1/3/0/6/130605509/kebir.pdf
    • http://farabozeki.audiostart76.icu/uploads/2020/01/29/kelaturud.pdf
    • http://tcsonline.net/uploads/1/3/0/4/130478438/130478438.html#contemporary+sociological+theory+jonathan+turner+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000163b.bin
ada265f611354de961fae7cfd517571eae4aac0c24e6b73a2937afdcf21ecf93
pdf-font-stream PDF embedded font (sfnt) at offset 0x163B 8220 bytes
font_01_sfnt_off00006825.bin
babe403de6de54d55b400948696eda07788430e2b852cfd621b353dea7ef1e45
pdf-font-stream PDF embedded font (sfnt) at offset 0x6825 16060 bytes
font_02_sfnt_off00007c63.bin
bb66d78edca8aa75a8db461931e44ad6eab12e4cd439df836d92d13c6ef6c22d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C63 2668 bytes