Malicious PDF — malware analysis report

Static analysis result for SHA-256 641a7f95d24a56ea…

MALICIOUS

PDF

64.0 KB Created: 2021-06-17 07:14:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: ba2d94b1f81899f26291f4dac1975fb0 SHA-1: 9a3bb9d48c66832112cec1538be00c8fc2db4fa4 SHA-256: 641a7f95d24a56ea67c68352393dfdd3e24e057cd92e4964f6cabc1616d0ff89
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to download further malicious content disguised as resume templates from compromised websites. The presence of multiple external URIs and a link farm structure suggests an attempt to distribute malware or facilitate phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8619

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 https://wastran.ru/uplcv?utm_term=civil+engineer+resume+word+format+free+download PDF link annotation
    • https://ludifrance.fr/userfiles/file/59069590501.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16073cce2e745e---gevugizujubal.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c58986c6503---24085215.pdfIn PDF document text
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d7e9239203---54981360781.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/46kpp2dmlshh5r9gg8sts54tdq/55121817622.pdfIn PDF document text
    • https://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/dcc1ee02dbb0b58383555db4f94b495c/50237045195.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/rijepozadaxopuwetijiga.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe1a3ad8cc---sasupubepowamejis.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/f89aedc0fa9b213eed7b9adad0103418/2311312713.pdfIn PDF document text
    • http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/d9473541515c5530e80929b3e02d2e02/pepesoresubokejumiwa.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/12421310182.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16094f3df2d9f7---foteli.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/i36e3g479cs95v9abcgmkbukb7/jukitafagakulorakitolapi.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/lusamol.pdfIn PDF document text
    • https://anfauglir.com/images/file/pidikeropasom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B8 5284 bytes
SHA-256: 9f11890f58d83bc73cdc364a250d91d80638a89877cab8443246ac8e01ab3e01

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