Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e956933da9e804f…

MALICIOUS

PDF

35.3 KB Authoring application: Nitro PDF First seen: 2020-09-15
MD5: 691371d96efbae975504781325b88ddc SHA-1: a248aa0eac7a03df32ce0335fda7d8544c0592cb SHA-256: 7e956933da9e804f355ff1eed27e4131b3d3d5f73931cb7e02e9ca11e59a7c5b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links to other PDF files hosted on various domains, a technique often used for SEO spam or to distribute further malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious with high confidence. No scripts were extracted from this sample.

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://laketanglewood.net/uploads/1/3/0/7/130775102/kukobagesuliri.pdf In PDF document text
    • http://farmhub.online/uploads/1/3/0/7/130739167/64fa0.pdfIn PDF document text
    • http://egitimcilerdenbatikhikayeler.com/uploads/1/3/0/5/130542866/davon-gigudik-jaxes-gefur.pdfIn PDF document text
    • http://mfjenk.com/uploads/1/3/0/5/130590322/754708.pdfIn PDF document text
    • http://readthinkwritespeak.com/uploads/1/3/0/8/130874408/9683194.pdfIn PDF document text
    • http://northforkyoga.com/uploads/1/3/0/8/130814234/1339380.pdfIn PDF document text
    • http://inaccuratehistory.com/uploads/1/3/0/6/130621734/tototilibox_sekaseze_tulonujeg_mikunaromem.pdfIn PDF document text
    • http://sk8roxy.com/uploads/1/3/0/5/130544446/kojogizenilizefu.pdfIn PDF document text
    • http://mindfulnesslab.centre4innovation.org/uploads/1/3/0/6/130621952/temiwewaj_duraxulavubo_fofiwerokuguze_bajen.pdfIn PDF document text
    • http://gmfoundation.net/uploads/1/3/0/5/130551463/rusapibewinep.pdfIn PDF document text
    • http://deliyannides.org/uploads/1/3/0/5/130542865/wonopot.pdfIn PDF document text
    • http://cpanel.anotsoemptynest.com/uploads/1/3/0/4/130435876/130435876.html#short+term+skilled+occupation+list+australia+2019In PDF document text

Related samples 6

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_off00003417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3417 7520 bytes
SHA-256: 514314587188dc71b1315e03d6f87c60f01f01c842389cffb83e0eca3f2a6b46

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