Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fa6580468c18cb3…

MALICIOUS

PDF

40.3 KB Authoring application: Smallpdf Desktop First seen: 2020-09-07
MD5: 86dbe6cb551297efd81cd79225036f21 SHA-1: a34b522cba55214d732e4d919485bd837f99bdc5 SHA-256: 3fa6580468c18cb357929aed712d4dd2bfd20c17ab3db4612d12982ff607a485
152 Risk Score

Malware Insights

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

The PDF document was identified as malicious by ClamAV with the signature Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded external links, indicative of a link farm designed to redirect users to potentially malicious content. The primary heuristic firing, PDF_SEO_LINK_FARM, confirms the presence of numerous external links, with the first identified URL being http://fonuporu.jetscan.tech/uploads/2020/01/28/3928095.pdf. This suggests the document's purpose is to lure users into clicking these links, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://fonuporu.jetscan.tech/uploads/2020/01/28/3928095.pdf In PDF document text
    • http://loungesevenzeroeight-photo.com/uploads/1/3/0/5/130540097/1146910.pdfIn PDF document text
    • http://adrienneleigh.com/uploads/1/3/0/5/130546024/doxumoloza.pdfIn PDF document text
    • http://sharalynedgeberg.com/uploads/1/3/0/5/130540507/1a4c4530.pdfIn PDF document text
    • http://buddy-burner.com/uploads/1/3/0/5/130542870/lowifirevof.pdfIn PDF document text
    • http://nakayamaus.com/uploads/1/3/0/4/130436204/3c3bc9fd834f.pdfIn PDF document text
    • http://tofawumat.woltag.com/uploads/2020/01/28/beresowed.pdfIn PDF document text
    • http://nicolas-rigaux-photographe.com/uploads/1/3/0/5/130588459/fevopawafezelode.pdfIn PDF document text
    • http://otelmap.com/uploads/2020/01/27/vovanefibe.pdfIn PDF document text
    • http://peldongaming.com/uploads/1/3/0/2/130287221/c21f374.pdfIn PDF document text
    • http://nekimastrategies.net/uploads/1/3/0/4/130435982/nakarurivaver-jukoxuke-zikunaxibis-vikavuwusi.pdfIn PDF document text
    • http://lanavozun.zichain.pro/uploads/2020/01/29/1258435.pdfIn PDF document text
    • http://3rdeyefitness.com/uploads/1/3/0/6/130621149/rupufiboz.pdfIn PDF document text
    • http://mujubube.maff.fun/uploads/2020/01/27/8eccfc07b75ee5.pdfIn PDF document text
    • http://mmakhaolak.com/uploads/1/3/0/6/130621470/6243891.pdfIn PDF document text
    • http://ntu-htfrc.weebly.com/uploads/1/3/0/5/130551461/3863887.pdfIn PDF document text
    • http://wisagov.ohotavkarelii.ru/uploads/2020/01/27/felunekafovuzex_fimoremiw_rojagiv_lovedaputi.pdfIn PDF document text
    • http://solidrocklouisville.com/uploads/1/3/0/6/130604639/vixiniseziwevurog.pdfIn PDF document text
    • http://operationgringo.com/uploads/1/3/0/5/130589040/1668770.pdfIn PDF document text
    • http://thesefeetwilltravel.com/uploads/1/3/0/3/130313632/9248907.pdfIn PDF document text
    • http://vodkaveritas.co.uk/uploads/1/3/0/6/130604741/b7c7e0365557.pdfIn PDF document text
    • http://fuxi.redmangroupe.com/uploads/2020/01/28/85e285fa2321b7d.pdfIn PDF document text
    • http://fob.stoloto.info/uploads/2020/01/27/refakudaxeditir_kupivozopanut_lamepofazosuf_dulunowovaro.pdfIn PDF document text
    • https://bexemajixa.weebly.com/uploads/1/3/0/4/130477083/megiton.pdfIn PDF document text
    • http://anderson-missions.com/uploads/1/3/0/5/130551559/130551559.html#most+difficult+ielts+academic+reading+test+pdfIn PDF document text

Related samples 5

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_off0000197b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197B 8912 bytes
SHA-256: 365eb0fca9f79d6e4a097951b9040f15ebba24ada3f3bf3ebd74c150063c7204

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