Malicious PDF — malware analysis report

Static analysis result for SHA-256 200fbb514e127fbd…

MALICIOUS

PDF

83.4 KB Authoring application: pdf-parser
MD5: 265ec9ce61c970c52fac8454d3bbb297 SHA-1: ee8a690082fe9c8f10e2cdb636e5bcdb667fd699 SHA-256: 200fbb514e127fbd9662199a01e1cc6cc4a46a3b9bcdde68d60241c1c8f40b74
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or content distribution scheme. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mx.quierovivirencanada.com/uploads/1/3/0/4/130490117/594700.pdf
    • http://naturesworks.net/uploads/1/3/0/7/130775195/ralezirura-zekikivagelogil.pdf
    • http://pineandsparrow.com/uploads/1/3/0/9/130969603/ziluribusipu_nevivulotomeni_sesedakojasixek.pdf
    • http://blumenbutt.com/uploads/1/3/0/5/130543598/ninebuz.pdf
    • http://storyspinner.net/uploads/1/3/0/6/130604109/c60c99edb8.pdf
    • http://misterdandtheteam.com/uploads/1/3/0/5/130589348/xisazivafok_sibebojiwuzupa.pdf
    • http://comalcommunityband.net/uploads/1/3/0/6/130621208/1517236.pdf
    • http://captcush.com/uploads/1/3/0/7/130739875/9d28f.pdf
    • http://balacas.com/uploads/1/3/0/6/130604700/5753574.pdf
    • http://cpanel.fitzgeraldga.org/uploads/1/3/0/4/130436390/6747370.pdf
    • http://flykingzcollection.com/uploads/1/3/0/5/130551190/8b4f5b041e760d.pdf
    • http://hotelbuyouts.com/uploads/1/3/0/4/130483801/4576541.pdf
    • http://a1096165xstreamtravel.xsideas.com/uploads/1/3/0/5/130588611/130588611.html#pulmonary+oedema+treatment+wikipedia

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006003.bin
6d09d86764caea358a31fa964cf459dcd686634b4f7dbf6a300d2ad40c63f098		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 10536 bytes

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