Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dfc0fb09010eb6c…

MALICIOUS

PDF

36.7 KB Authoring application: Nitro PDF
MD5: 52fe6330d70e8cdcc4137af508562d28 SHA-1: ab431f89dd5615f40cf0cfa324cbe35f1255a75d SHA-256: 9dfc0fb09010eb6cc4fddb4fc3b247a7f7896eacaea5d988eb3f58fb61684643
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The primary attack pattern involves directing users to a multitude of external PDF files, likely for SEO poisoning or to host phishing content.

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://southernoaksrestorationco.com/uploads/1/3/0/5/130590538/velofiwagibodo.pdf
    • http://surveyoz.com/uploads/1/3/0/6/130620972/c225bf.pdf
    • http://safeplacewildlifesanctuary.org/uploads/1/3/0/5/130539659/nidowuleko_nexuweberosi_podulin.pdf
    • http://downdogz.com/uploads/1/3/0/7/130740015/jatot.pdf
    • http://hostmaster.selectsoftballacademy.com/uploads/1/3/0/6/130620931/remujaruted.pdf
    • http://mjbjacobs.com/uploads/1/3/0/6/130639477/6c94a12d.pdf
    • http://wildwrenfarm.com/uploads/1/3/0/5/130539021/410db2d05a678.pdf
    • http://rucomingout.com/uploads/1/3/0/6/130604229/vimanuba-xoregiwumu.pdf
    • http://113366.co/uploads/1/3/0/4/130436258/036c9f0acebc0.pdf
    • http://kitschorama.net/uploads/1/3/0/8/130813063/75fcc3d3.pdf
    • http://randakksdevelopment.com/uploads/1/3/0/4/130483047/609dbf5c4ed4ed4.pdf
    • http://www.elitevallc.com/uploads/1/3/0/6/130640225/verugabaledonuwaguv.pdf
    • http://vickiesworld.com/uploads/1/3/0/5/130588789/603acc50469.pdf
    • http://lynne-simpson.pleasingfood.com/uploads/1/3/0/8/130814914/130814914.html#use+case+diagram+for+university+management+system+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000367e.bin
f5f53f5e77281ae3769530d896fa3356f6e807cce88ef9f2674a77351fa48dda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x367E 7968 bytes

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