Malicious PDF — malware analysis report

Static analysis result for SHA-256 35cf5912b324d075…

MALICIOUS

PDF

46.1 KB Authoring application: LibreOffice
MD5: 5d67a122d8418f9020dd414524891088 SHA-1: 6746c78d2428a187443a3dfd6dd09271e5390734 SHA-256: 35cf5912b324d075269f7de0dcd5fb22c9988c775ec86c19f224a32220e3d1ee
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This is indicative of a link farm or a phishing campaign designed to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious nature of this file. No scripts were extracted, and the document body was heavily obfuscated, but the primary attack pattern is the mass distribution of external links.

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://healthcaremanager.net/uploads/1/3/0/2/130289577/wojipa-pedunofutiseguw-nitut-gubemigasi.pdf
    • http://mufeto.antlermediagroup.com/uploads/2020/01/27/sowodipepusonof-soguwom-fapagezixedulu-nagej.pdf
    • http://pettoy.net/uploads/1/3/0/2/130271148/9eeda7a0.pdf
    • http://suvepom.csrnomey.com/uploads/2020/01/28/4950418.pdf
    • http://gdxsdxrexgtesgxdsese.xyz/uploads/2020/01/27/fiworazepatix.pdf
    • http://kafasso.by/uploads/2020/01/27/teparirixi_fuxotezazowumew.pdf
    • https://vexufodo.weebly.com/uploads/1/3/0/2/130272369/lafawizaxupazit-bipogofajoluk.pdf
    • http://vof.doma-2.ru/uploads/2020/01/29/pawebezuk-dizajeraluxuve.pdf
    • http://dancinglotus.org/uploads/1/3/0/4/130436145/bagalowiromonu-rujaw.pdf
    • http://gezo.retinuelk.org/uploads/2020/01/29/4f61dd57b.pdf
    • http://xuguz.shopdochoi.tech/uploads/2020/01/27/xuvadetariguwifu.pdf
    • http://audreylewisinteriors.com/uploads/1/3/0/5/130589179/rivimoberofijuk-sozun-pevikemoxewus-vevegobinejib.pdf
    • http://coca-cola-promo.icu/uploads/2020/01/28/8929630.pdf
    • http://ganijo.nhatminhphoto.online/uploads/2020/01/28/menipulomared_texolotejuvuti_gumaxejep_dadefibu.pdf
    • http://zumadeluxeco.weebly.com/uploads/1/3/0/6/130605306/nunopefuwijifam_fixapibudavatip_mifokilowijarup.pdf
    • http://salishseamedicine.com/uploads/1/3/0/6/130605490/5183814.pdf
    • http://wazo.remont-msk8.icu/uploads/2020/01/28/maxade-lorupakebefida.pdf
    • http://merakidestinationmanagement.com/uploads/1/3/0/5/130590257/8eda2c68d79.pdf
    • http://studyyourwaynz.com/uploads/1/3/0/4/130483114/8dd5d980b.pdf
    • http://stayprotected.org/uploads/1/3/0/6/130620700/df4d047e6f0.pdf
    • http://medmico-h2020.com/uploads/1/3/0/3/130323542/poxapubixura-xonena-sedopa-ribujelamotip.pdf
    • http://nazabigime.bashnya-wedding.ru/uploads/2020/01/28/sidadixix.pdf
    • https://lipenevarulotez.weebly.com/uploads/1/3/0/6/130604415/lutifi_gifirip_busexif.pdf
    • http://mindcoachnederland.nl/uploads/1/3/0/5/130551127/2050914.pdf
    • http://listening-hands.net/uploads/1/3/0/3/130324440/18ab42.pdf
    • http://soulintegration.com.au/uploads/1/3/0/6/130621757/130621757.html#assoluto+racing+hack

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001870.bin
ac9295673058e14c063127502242d73fabfc880bcb9de712555f1873d0f40480
pdf-font-stream PDF embedded font (sfnt) at offset 0x1870 8052 bytes
font_01_sfnt_off00006b58.bin
c7143368894299a997ed09f05024df052d964886bc902d598de4a6791c50751f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B58 10292 bytes