Malicious PDF — malware analysis report

Static analysis result for SHA-256 673a370e6815be89…

MALICIOUS

PDF

41.9 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 75c7360bbd20a0ed661fb043bdfb286e SHA-1: 01e78655155ca6d759266c3d538d31ed08a3f0fd SHA-256: 673a370e6815be891a764ee1035154fc70eb4e4a8e2fc4c57345f3c8a70000cf
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs pointing to external PDF files across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as flagged by the PDF_SEO_LINK_FARM heuristic and ClamAV detection. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://bestlimoservicelosangeles.net/uploads/1/3/0/5/130551245/butivibemovunigotet.pdf In PDF document text
    • http://www.thecraftjunkies.com/uploads/1/3/0/8/130874001/1187661.pdfIn PDF document text
    • http://thehot-boxcompany.com/uploads/1/3/0/2/130272586/taridibexi.pdfIn PDF document text
    • http://brucegendelman.com/uploads/1/3/0/6/130605182/pidodiwamaz.pdfIn PDF document text
    • http://esportsfloors.com/uploads/1/3/0/7/130776174/zubezopixasifim-nanukeritoj.pdfIn PDF document text
    • http://www.dfwwilliams2017.com/uploads/1/3/0/3/130379482/komopedudujigazepo.pdfIn PDF document text
    • http://bloggersforacause.com/uploads/1/3/0/4/130490875/6032721.pdfIn PDF document text
    • http://sqeda.com/uploads/1/3/0/7/130776100/lodadokiluko.pdfIn PDF document text
    • http://davidcarere.com/uploads/1/3/0/6/130603853/d650ec9bfd2121.pdfIn PDF document text
    • http://www.consaborinc.com/uploads/1/3/0/6/130621597/194ee.pdfIn PDF document text
    • http://salonsirena.com/uploads/1/3/0/6/130639691/f59c081ca7.pdfIn PDF document text
    • http://cannabisrunvt.com/uploads/1/3/0/7/130775665/jaxunig_muxaz_misafufapuluwok.pdfIn PDF document text
    • http://adopttheborder.org/uploads/1/3/0/8/130814118/xepufixuk-lozuluna-vugisuzej.pdfIn PDF document text
    • http://redbolero.com/uploads/1/3/0/6/130604203/dedinesuxusodub.pdfIn PDF document text
    • http://maketober.com/uploads/1/3/0/5/130589002/madusik_vezivejoka_jigazesu.pdfIn PDF document text
    • http://4wys0r.bdgct.com/uploads/1/3/0/7/130775378/130775378.html#dead+poets+society+full+movie+download+mkvIn PDF document text
    • http://regionc.swe.org/uploads/1/3/0/4/130435834/806335.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF3 16312 bytes
SHA-256: 1d1fa5121415f8f5353993473374918b9d2a38f433752094af4cce5d3be72c8c
font_01_sfnt_off00004665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4665 8456 bytes
SHA-256: 8cba32c6f323a3598ed9220c5612be7040d185e991030a9c01d83c52d6a61727

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