Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45e9daf90400e0d…

MALICIOUS

PDF

39.0 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 565cb4384fd35253f1c362d01dbc407c SHA-1: aa529d6e3e6c8b6adc4eaabba07ccaee812cb814 SHA-256: d45e9daf90400e0df8f91c804603a8fc5ec7d5648c9774ceb05455680a8d4e77
200 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a link farm, with the primary purpose of SEO manipulation. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the presence of embedded URLs further support a malicious intent, likely phishing or traffic redirection. The heuristic 'SE_DOWNLOAD_BUTTON' suggests a lure to encourage user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://northshoreconstructionchriskanter.com/uploads/1/3/0/8/130814717/sinogevonud-gugop-tadetefa-rinopu.pdf In PDF document text
    • http://dhanvantaridham.com/uploads/1/3/0/7/130738524/1a103e56.pdfIn PDF document text
    • http://onelasttreat.org/uploads/1/3/0/7/130775441/8680520.pdfIn PDF document text
    • http://giftofreverence.com/uploads/1/3/0/6/130605517/bf5213.pdfIn PDF document text
    • http://collectifcontraceptionliege.com/uploads/1/3/0/6/130639275/veduwuna.pdfIn PDF document text
    • http://manuelcastro.com/uploads/1/3/0/3/130323526/solabazebiga.pdfIn PDF document text
    • http://lacebar.com/uploads/1/3/0/2/130289294/0264d.pdfIn PDF document text
    • http://mynuagain.com/uploads/1/3/0/3/130313555/bawotipezosunin_texurugebunesu_wofuv_jugovijivavo.pdfIn PDF document text
    • http://businessfurniturecleaning.com/uploads/1/3/0/5/130588517/3974793.pdfIn PDF document text
    • http://mta-sts.mx.sheldonheights.com/uploads/1/3/0/6/130620971/2729579.pdfIn PDF document text
    • http://shadowlights.cafe/uploads/1/3/0/7/130776273/bamolo-wujabuweza-leleruzetakaban-zukolowojufade.pdfIn PDF document text
    • http://3dprintedgospel.com/uploads/1/3/0/7/130738812/zatujopijudazubitan.pdfIn PDF document text
    • http://smart-touchscreen.com/uploads/1/3/0/2/130291702/wonumidiwopakege.pdfIn PDF document text
    • http://nativitybloomingtonparish.org/uploads/1/3/0/8/130814784/b9ad9f6e9.pdfIn PDF document text
    • http://naualli.net/uploads/1/3/0/7/130776492/kijixukiwigulodurixe.pdfIn PDF document text
    • http://iknowschmidt.com/uploads/1/3/0/8/130813332/ffa55e8a2be.pdfIn PDF document text
    • http://nomnomnatural.com.au/uploads/1/3/0/2/130288532/a999295f25eb9.pdfIn PDF document text
    • http://mdcurbside.net/uploads/1/3/0/4/130476288/ff431982f.pdfIn PDF document text
    • http://www.madeitplymoutheshop.com/uploads/1/3/0/7/130776617/2391723.pdfIn PDF document text
    • http://peelian.net/uploads/1/3/0/5/130588923/4801961.pdfIn PDF document text
    • http://nova-torg.net/uploads/1/3/0/4/130478106/4466c22d4178.pdfIn PDF document text
    • http://mykittykandy.com/uploads/1/3/0/6/130605432/d3f838b476.pdfIn PDF document text
    • http://vossmedia.net/uploads/1/3/0/7/130776073/fisanizix.pdfIn PDF document text
    • http://houstonasta.voyagerwebsites.com/uploads/1/3/0/5/130546804/130546804.html#solar+battery+charger+using+lm317In PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000354c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x354C 8188 bytes
SHA-256: 39064264879f0ad0472cc5cfe1a3cd8b29ff03ff7742c3768ee21013d65c4cb9

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