Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d00691d1b4b269a…

MALICIOUS

PDF

40.8 KB Authoring application: Nitro PDF First seen: 2020-09-24
MD5: 05726163c22d2b165cbdb7a803996b3f SHA-1: 97c95bac61fe85865dd08c504f692efc4ebb9cad SHA-256: 4d00691d1b4b269a01ccaa7087f64e2c148d71cdb37970353fa1e54ce30d57e9
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to other PDF files hosted on various domains, indicative of a link farm. This technique is often used to distribute malware or facilitate phishing attacks. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

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://percorsidarte.com/uploads/1/3/0/2/130291441/5362587.pdf In PDF document text
    • http://buckbucklestein.com/uploads/1/3/0/6/130639273/8898195.pdfIn PDF document text
    • http://worldofcoffee-dublin.com/uploads/1/3/0/6/130604949/ea7444.pdfIn PDF document text
    • http://crimsonshadowpack.com/uploads/1/3/0/6/130621392/gofunoxovulaba.pdfIn PDF document text
    • http://juneaudining.com/uploads/1/3/0/7/130775897/8354ae464a75791.pdfIn PDF document text
    • http://friend-vibes.com/uploads/1/3/0/2/130289748/tavefebukiwi_vatikasipeg_pubuzajugulabe_sogatisenoru.pdfIn PDF document text
    • http://discoverhomestores.com/uploads/1/3/0/6/130621163/valiwir_gonebufiduwipir_febirasole.pdfIn PDF document text
    • http://northwestfineartstudio.com/uploads/1/3/0/3/130323835/e04f6b33add.pdfIn PDF document text
    • http://stdesignmatters.com/uploads/1/3/0/7/130740166/6735614.pdfIn PDF document text
    • http://mjyoga.net/uploads/1/3/0/4/130476427/waxevegezinuxa_nawujab_bedox_mufupe.pdfIn PDF document text
    • http://matterportservices.com/uploads/1/3/0/4/130435509/9ef5995ca.pdfIn PDF document text
    • http://dancinggoatsanctuary.com/uploads/1/3/0/7/130739980/130739980.html#can+i+convert+pdf+to+word+in+adobe+readerIn 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_off0000133b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133B 8036 bytes
SHA-256: 9db2aa8c92878c0e4ecac805c30f0e8dd0b4031cc21f396966bc32a6164f0622
font_01_sfnt_off0000584e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x584E 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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