Malicious PDF — malware analysis report

Static analysis result for SHA-256 274057569e22e133…

MALICIOUS

PDF

46.3 KB Authoring application: Poppler-utils
MD5: 2f35a7787c077ab0166b6664075bbede SHA-1: df0daad7286df83ebde2fea634e9fc4cb4138c42 SHA-256: 274057569e22e133f4ae4746749c93c9aabe62491cc97111c99a0246e8cca169
130 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files with numeric slugs in their URLs. This behavior is indicative of a link farm designed to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious classification. No scripts were extracted from this sample.

Heuristics 4

  • 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
  • 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://chainznthingz.com/uploads/1/3/0/4/130490585/sajegeki_rakudaku_nidofebetogodi_xepopibidorut.pdf
    • http://stjohnslutheranchurchjenison.org/uploads/1/3/0/3/130323475/lekebafe.pdf
    • http://nsedacademy-payments.org/uploads/1/3/0/5/130540266/242d93be.pdf
    • http://pwcatl.org/uploads/1/3/0/6/130622120/43c348403279.pdf
    • http://deltakappagamma-tx-epsilonkappa.weebly.com/uploads/1/3/0/4/130435738/e939522bf8455c3.pdf
    • http://lisiduk.vipiski-besplatno22.icu/uploads/2020/01/28/e2a11b.pdf
    • http://fus.grupo-can.com/uploads/2020/01/29/6877208.pdf
    • http://tupamak.emirhanbey.com/uploads/2020/01/28/zufarev.pdf
    • http://naraxis.com/uploads/1/3/0/3/130312964/foriza_zosijeradafusov.pdf
    • http://myecwc.com/uploads/1/3/0/6/130604083/2211334.pdf
    • http://misssantaclara.com/uploads/1/3/0/4/130436426/fomijuposotozezeku.pdf
    • http://mistressvexx.com/uploads/1/3/0/5/130550949/8f339dbefae477.pdf
    • http://newcityvintage.com/uploads/1/3/0/2/130289308/pirevokodidosurefow.pdf
    • http://gwe-design.com/uploads/1/3/0/5/130546519/lufovakamonajufovalo.pdf
    • http://mokenifo.randkujruchaj.online/uploads/2020/01/28/2ca326b63c78.pdf
    • http://pizzamiamilano.com/uploads/1/3/0/3/130313072/nimib-dadakidog.pdf
    • http://thehnossaproject.com/uploads/1/3/0/5/130539016/130539016.html#implosion+never+lose+hope+apk+data+offline

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001546.bin
5a87f51f6c63b4e7d790272b6fd946bb388e773f0c223d69572a7c599329cd1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x1546 8604 bytes
font_01_sfnt_off00006e27.bin
48dc34574ad466b140e1cd652e666c68fc4f3c002b3b202410ec1bddaf17efe6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E27 16100 bytes