Malicious PDF — malware analysis report

Static analysis result for SHA-256 076d8753e7d88ed2…

MALICIOUS

PDF

46.6 KB Authoring application: pstoedit
MD5: 6a27b7aadf7b767c4f44540efc400f3c SHA-1: e5d8ab6785d2daa1945d62f61d608add83450169 SHA-256: 076d8753e7d88ed217bed7d3c18913f7e56ad3c95e439592bdb0257c97fab88e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to numerous PDF files hosted on various domains, suggesting a link farm or distribution network. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted, but the sheer volume of outbound links indicates a malicious intent to redirect users or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://billtheinspector.com/uploads/1/3/0/6/130639454/rirej-butavujopida-tojoro-mekawanuxaxi.pdf
    • http://jumpcanopy.com/uploads/1/3/0/2/130287945/1139c.pdf
    • http://yogavasuckhoe.com/uploads/1/3/0/2/130271128/1b859877b2b145a.pdf
    • http://monsieurcoulibaly.com/uploads/1/3/0/2/130270847/xuzabunujovolu-pavef.pdf
    • http://zelins.website/uploads/1/3/0/6/130639800/rifisumorez.pdf
    • http://theratinglist.com/uploads/1/3/0/4/130490115/9253039.pdf
    • http://toxicologist-katie-chiang.com/uploads/1/3/0/4/130477335/gonenuzowomo.pdf
    • http://fitness-private.com/uploads/1/3/0/6/130620841/5305832.pdf
    • http://returningtocompassion.org/uploads/1/3/0/2/130288939/vozuxowezeke_kumodusoza.pdf
    • http://gregorybulpitt.com/uploads/1/3/0/8/130814279/8e41e8c8.pdf
    • http://davidbahl.com/uploads/1/3/0/7/130776607/giwipibumagel.pdf
    • http://worldofinfo.ru/uploads/1/3/0/7/130739938/wesolonezup.pdf
    • http://shop-perfectly-impressive-store.com/uploads/1/3/0/5/130551882/dexomuxepirixe.pdf
    • http://olaarte.com/uploads/1/3/0/7/130739098/wimul.pdf
    • http://themarzkas.com/uploads/1/3/0/2/130270932/4088162.pdf
    • http://mike4congress.com/uploads/1/3/0/5/130551427/bf2f14.pdf
    • http://dandelionsandhoneybees.com/uploads/1/3/0/6/130604568/dawefigas_nabatipilixe_litunasig.pdf
    • http://juntamugre.net/uploads/1/3/0/5/130539446/4045185.pdf
    • http://qpmllccompany.com/uploads/1/3/0/4/130476180/sazuvaful.pdf
    • http://74-123-77-55.mgwnet.com/uploads/1/3/0/5/130539188/130539188.html#aa+big+book+prayers
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003f9e.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F9E 16036 bytes
font_01_sfnt_off000056e4.bin
54e7a68ad86272db1050165b6a22bdd39ab885c8540d794276fd53fb011016cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56E4 8196 bytes

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