Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a9224fa50f095fa…

MALICIOUS

PDF

46.2 KB Authoring application: pstoedit First seen: 2020-09-24
MD5: 9c89b5171ac1af13f34cf3a43bab987b SHA-1: 512cf9418735fae64802ff20def92e4d8762e5e8 SHA-256: 7a9224fa50f095fa50fce17c6b3ab9b3f476f2a60944aad44157e6602a16d116
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and an ML classifier also flagged it as malicious. The document body contains garbled text and what appears to be a recipe request, which is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://illumina.implementation.collectivehealth.com/uploads/1/3/0/2/130289546/nosavewizebeka-melazefu.pdf In PDF document text
    • http://sanjosedelosreynoso.com/uploads/1/3/0/4/130435791/kufibijagex.pdfIn PDF document text
    • http://mynetclouds.com/uploads/1/3/0/8/130874411/e0470f4aa96.pdfIn PDF document text
    • http://dragons-media.com/uploads/1/3/0/5/130538956/8129305.pdfIn PDF document text
    • http://paulushookcafe.com/uploads/1/3/0/6/130620791/cdaf9.pdfIn PDF document text
    • http://assessmentsystemscorporation.com/uploads/1/3/0/4/130435745/20a79.pdfIn PDF document text
    • http://jaminspiraedu.com/uploads/1/3/0/8/130815008/9238272.pdfIn PDF document text
    • http://asmallundertaking.com/uploads/1/3/0/3/130313046/pumuk-dejugivez.pdfIn PDF document text
    • http://www.hcs-conference.com/uploads/1/3/0/3/130323212/1818784.pdfIn PDF document text
    • http://jaclassicandsports.com/uploads/1/3/0/4/130476447/5e81b9.pdfIn PDF document text
    • http://peoplesgoldmine.com/uploads/1/3/0/5/130590177/7651879.pdfIn PDF document text
    • http://urbanabstract.art/uploads/1/3/0/5/130539338/rumafivax-basediximivad-zenibunolaxa.pdfIn PDF document text
    • http://jsconsultingmaui.com/uploads/1/3/0/9/130969829/luranosokevamu.pdfIn PDF document text
    • http://mlmbigmoney.com/uploads/1/3/0/6/130604859/pujuwu.pdfIn PDF document text
    • http://www.septictankpumpinggwinett.com/uploads/1/3/0/5/130546657/wovenazosev.pdfIn PDF document text
    • http://ooredooalgeria.net/uploads/1/3/0/3/130379912/bc13fcb.pdfIn PDF document text
    • http://talaldaoud.com/uploads/1/3/0/6/130620961/bulepaxuxotumovenezo.pdfIn PDF document text
    • http://fotoboy.org/uploads/1/3/0/6/130639693/bixal.pdfIn PDF document text
    • http://mrssheltonsclassroomeghs.com/uploads/1/3/0/7/130739068/2493980.pdfIn PDF document text
    • http://revelationsmagazine.com/uploads/1/3/0/3/130313531/dugob_vuzekapejel_lebinepoba.pdfIn PDF document text
    • http://loureview.com/uploads/1/3/0/6/130621439/4766873.pdfIn PDF document text
    • http://www.kelseycurrent.com/uploads/1/3/0/9/130969614/dirudanamifub-vobel-jajejojagajulu.pdfIn PDF document text
    • http://casaservicesfinanciers.com/uploads/1/3/0/5/130550713/43546e7b63d982.pdfIn PDF document text
    • http://countrymusicpromo.com/uploads/1/3/0/6/130604585/fb18ba31765e623.pdfIn PDF document text
    • http://danielstorage.com/uploads/1/3/0/2/130289655/23c9a9e361472d.pdfIn PDF document text
    • http://abraxasroots.org/uploads/1/3/0/3/130324241/130324241.html#aam+ka+achar+kaise+banaya+jata+hai+video+batayeIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign: asmallundertaking.com 8 samples

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE6 16444 bytes
SHA-256: 07c73be30eb34948e74f52f70ebe7fddcf8d7968b2f44a68d1202150632f322e
font_01_sfnt_off0000449e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x449E 1708 bytes
SHA-256: 83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086
font_02_sfnt_off00004fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA4 7968 bytes
SHA-256: 1c2b7cee688207bdc344548700762ad236bc18c9169b0fbe3fbad23e7405fc13