Malicious PDF — malware analysis report

Static analysis result for SHA-256 036d418d3cede8ee…

MALICIOUS

PDF

38.1 KB Authoring application: Mobipocket Creator
MD5: e4847470844b516fe7ae8e2e2caef7b3 SHA-1: 149aae998192b65e2b196fd24b403b253f838ae4 SHA-256: 036d418d3cede8ee4d534275552e3f20409afd0007d4bd8176659361d54e3a92
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. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The document body, though heavily obfuscated, contains references to 'Mobipocket Creator' and 'network commands ip address', suggesting a potential lure or distraction. The primary malicious activity appears to be the distribution of numerous PDF files via external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://smithhonig.studio/uploads/1/3/0/3/130313363/6823147.pdf
    • http://sfifp.org/uploads/1/3/0/8/130874666/0f162ce938802.pdf
    • http://www.verenaboehm.com/uploads/1/3/0/4/130489172/finuxinera-towadurazid-lozibose-xuboxinebisutam.pdf
    • http://patinetexiaomi.com/uploads/1/3/0/7/130776271/10497ff.pdf
    • http://catalog2buy.com/uploads/1/3/0/5/130543240/dogadevux.pdf
    • http://angelicharpacademy.com/uploads/1/3/0/7/130739218/jimuritura.pdf
    • http://valleyvisualmedia.com/uploads/1/3/0/8/130874223/d9f3c91038e1.pdf
    • http://www.clevelandjuicebox.com/uploads/1/3/0/5/130588772/c6ec93.pdf
    • http://baselandspice.com/uploads/1/3/0/2/130288571/39f5b44bdfc5.pdf
    • http://southforkfunds.com/uploads/1/3/0/8/130813834/fonebekaxowonav_sewudol_sumewugofilofok_xefujet.pdf
    • http://pashouse.net/uploads/1/3/0/5/130540746/2087401.pdf
    • http://crispinospizza.com/uploads/1/3/0/4/130483759/tamegejoxup_nuliredobum.pdf
    • http://www.tandkcollaboration.com/uploads/1/3/0/7/130740062/5493373.pdf
    • http://alexislaurenware.com/uploads/1/3/0/2/130287394/964997.pdf
    • http://lltraininginstitute.net/uploads/1/3/0/7/130738607/dakepikivikuvob_vazisuxirex_ruxagowokipix_julunaxerugipix.pdf
    • http://fxu14.bpmtc.com/uploads/1/3/0/4/130476065/130476065.html#cmd+network+commands+ip+address

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003956.bin
9e9944c87a0c94d77d919002d864a6f98db58575929a461f5ba487a5e94d6334		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3956 8168 bytes

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