Malicious PDF — malware analysis report

Static analysis result for SHA-256 411def0e0d4d9943…

MALICIOUS

PDF

44.7 KB Authoring application: Pdftk First seen: 2020-09-24
MD5: 0086b8592be84c9dc73fa0d974138124 SHA-1: 7ed3165522785edd4ac13460182bd6698afab862 SHA-256: 411def0e0d4d9943b386ae19d6fb4919b83107850cf61e5f92f85f359393821e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF_SEO_LINK_FARM heuristic fired, revealing a large number of embedded external links, predominantly hosted on `nidinidi.com` and similar domains. This suggests the document's primary purpose is to redirect users to potentially harmful content or facilitate a phishing campaign through a link farm. No scripts were extracted from this sample.

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://nidinidi.com/uploads/1/3/0/4/130477083/kifatajejimi_tazizenumot_salotunotav.pdf In PDF document text
    • http://angieschickerowski.com/uploads/1/3/0/6/130639609/fobopora.pdfIn PDF document text
    • http://shopsimplymade.com/uploads/1/3/0/3/130323295/a282b0dcc064b41.pdfIn PDF document text
    • http://uitests.com/uploads/1/3/0/5/130588266/nizozadekokeke-jugutawixakeg.pdfIn PDF document text
    • http://nachomamasbedandsnack.com/uploads/1/3/0/6/130605509/jakuze.pdfIn PDF document text
    • http://parketvloerenschuren.be/uploads/1/3/0/7/130738978/3cd3a0.pdfIn PDF document text
    • http://warwickcarriagedriving.com/uploads/1/3/0/5/130545001/9428706.pdfIn PDF document text
    • http://keriakvirginhair.com/uploads/1/3/0/6/130620490/sobibadoxapozuwi.pdfIn PDF document text
    • http://mythbay.com/uploads/1/3/0/5/130540037/70366fbb243bf10.pdfIn PDF document text
    • http://healingwatersrvpark.com/uploads/1/3/0/6/130604988/niteleremijoxuzofi.pdfIn PDF document text
    • http://ourbaptistheritage.org/uploads/1/3/0/3/130379078/xafalulivuvoxipadubi.pdfIn PDF document text
    • http://djspizza1.com/uploads/1/3/0/6/130605331/130605331.html#ts+of+male+ascaris+diagramIn PDF document text

Related samples 1

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_off00001351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1351 9220 bytes
SHA-256: 38332d15414be5098f4101cc3f5626f5b40db7caebbe67b033594888caf6d2d6

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