Malicious PDF — malware analysis report

Static analysis result for SHA-256 be79b46bbd9605c3…

MALICIOUS

PDF

33.0 KB Created: 2020-05-12 00:31:14 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b9a362cc671bbf26519d60624ceeb67d SHA-1: ac0cc1a11b01dc3e282f4c73926b7e25cc437ea6 SHA-256: be79b46bbd9605c3f6e1bdb0eb2235f403e329a5285126a800581b074c67efdb
92 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 by the PDF_SEO_LINK_FARM heuristic. The embedded document body text, though garbled, contains a URL that matches one of the extracted links. This suggests the document's primary purpose is to redirect users to a network of other PDF files, likely for malicious purposes such as SEO spam or distributing further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://cfthomas.com/uploads/1/3/0/4/130477293/130477293.html#grade+2+creative+writing+worksheets+pdf
    • http://longevolution.com/uploads/1/3/0/6/130604949/parajavawesu-kakilukabisudul-majevisobuzajob-xejidebubobed.pdf
    • http://loveydoveycreations.com/uploads/1/3/0/4/130476786/1569745.pdf
    • http://cpanel.alfredmontessori.com/uploads/1/3/0/7/130739173/9830107.pdf
    • http://wearthenature.com/uploads/1/3/0/7/130775846/kupoxesu-witusoki-wedilun.pdf
    • http://icrj-aejmc.com/uploads/1/3/0/4/130489001/totowovogogu-jonigijunesatox.pdf
    • http://smmsystem.com/uploads/1/3/0/2/130291689/jazaxipero.pdf
    • http://kathrinesteele.com/uploads/1/3/0/2/130289443/duzefemakuwopu.pdf
    • http://morganadvisory.biz/uploads/1/3/0/6/130639236/6462150.pdf
    • http://theentitydoctor.com/uploads/1/3/0/7/130738831/8321076.pdf
    • http://coastalpropertypartners.com/uploads/1/3/0/5/130539092/leladutuzezip_jixar_lilolasesiz_remel.pdf
    • http://georgschreiner.com/uploads/1/3/1/4/131483108/xarunon_texuf.pdf
    • http://petcontrol.org/uploads/1/3/1/4/131410538/xebili.pdf
    • http://stjohncic.org/uploads/1/3/0/4/130488884/6840000.pdf
    • http://kongsvape.com/uploads/1/3/1/3/131379860/zopaf-wafevufu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057b6.bin
26e200f0e15d25aa7bbb7542d9f1bfdb61f4b6e113c5f79eba81e484b943b5c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B6 10292 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.