Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f026078e154423e…

MALICIOUS

PDF

49.7 KB Authoring application: Nitro PDF
MD5: 8e96743f4b69da45bdf1c29a335462e3 SHA-1: 407da38fc3ef9bb7157ec267585767a93c68d12a SHA-256: 4f026078e154423e3cc627983fbb14c980cc05df3fbe3e26d302820b6f8bdc86
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 links to external PDF files hosted on various domains. This behavior is indicative of a link farm used to distribute phishing content or malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection motive. No scripts were extracted from this sample, and the document body content is largely unreadable due to encoding issues.

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://usedtruckcanopies.com/uploads/1/3/0/7/130739777/3596944.pdf
    • http://stylerolodex.com/uploads/1/3/0/3/130323449/906351ebfa22.pdf
    • http://carlisle-taxi-number.com/uploads/1/3/0/7/130775162/5165214.pdf
    • http://www.mohamed-albarasi-academy.com/uploads/1/3/0/5/130539979/jubenenovesib.pdf
    • http://lbisland.net/uploads/1/3/0/6/130620283/lorajojijarosa-susidod-xoxuvoxovepej.pdf
    • http://oneactioncalendar.org/uploads/1/3/0/2/130287997/5020918.pdf
    • http://vixenacademyofhouston.shop/uploads/1/3/0/6/130621451/xitidujejifuwo.pdf
    • http://www.saycheeseonlineorder.com/uploads/1/3/0/5/130588987/9398745.pdf
    • http://knitolympics.com/uploads/1/3/0/6/130621179/gabisunixinube-fedizidajew-puxogatu.pdf
    • http://joyofbeinghuman.com/uploads/1/3/0/6/130621545/gasaluz.pdf
    • http://rootedinmma.com/uploads/1/3/0/2/130287238/4892018.pdf
    • http://chardia.net/uploads/1/3/0/6/130639143/6cff039f6d9.pdf
    • http://www.benbernous.com/uploads/1/3/0/6/130604232/datarosi_nobipimefonav.pdf
    • http://mixedattainmentteaching.com/uploads/1/3/0/2/130272554/rifepagi.pdf
    • http://missionalworship.com/uploads/1/3/0/2/130273791/wabibafaseluwe_ragamodil_losirodivafoka.pdf
    • http://5pointauto.com/uploads/1/3/0/4/130435892/130435892.html#how+to+convert+apple+picture+to+pdf

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000037f1.bin
82709c0e416d7f4f8894a9edd74741797cc81902d45ba188dae5f0d20ce5434d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37F1 4120 bytes
font_01_sfnt_off0000444e.bin
d2d762cad8d8895e5ca7a626054389bb850df3c9660c7169db4213e768f75003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x444E 16500 bytes
font_02_sfnt_off000059fd.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59FD 2652 bytes
font_03_sfnt_off0000662f.bin
badc9e4e3e858a354660453da45516583db895197de7665d7b3fdcc6ea3b8702		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662F 8292 bytes

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