Malicious PDF — malware analysis report

Static analysis result for SHA-256 f234926d380452ac…

MALICIOUS

PDF

68.1 KB Created: 2021-03-01 16:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: e441df1113a1386d3e315b249475c526 SHA-1: b0f210e1a5cb7041907c67dbf787a7c8a99a4d44 SHA-256: f234926d380452ac016f7ca68dc2183e047a9ad6ec319288598833fe611dfaaa
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to suspicious domains and are likely part of a link farm designed to attract traffic or distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URLs suggest an attempt to redirect users to malicious content, potentially for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://vilenefex.ru/wix?keyword=mixed+macho+arts+unblocked+games PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381082/normal_6038734bf4164.pdfIn PDF document text
    • https://welirupew.weebly.com/uploads/1/3/4/6/134662060/wofupugizib_zurenuzopejuxuk_xumofonofosu.pdfIn PDF document text
    • http://sezewadiwun.22web.org/60488897881.pdfIn PDF document text
    • http://ralenexixozuk.iblogger.org/86132056695.pdfIn PDF document text
    • https://niresofet.weebly.com/uploads/1/3/2/6/132682193/livowimigerozo-pirugu.pdfIn PDF document text
    • https://tugemizibu.weebly.com/uploads/1/3/0/7/130739278/gafezuzariwupi_pepogixego_jegakaza_ledug.pdfIn PDF document text
    • http://bibobupuk.22web.org/mobovikuredigabimejumogex.pdfIn PDF document text
    • http://pujugekan.iblogger.org/zosudabaxatak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384469/normal_5fcf830a4a67d.pdfIn PDF document text
    • https://pilogowizimofog.weebly.com/uploads/1/3/4/6/134604263/juvujanegusakamag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/senodiw/sedewivoxinet.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/all_rounder_songs_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/analysing_school_performance_asp.pdfIn PDF document text
    • http://jagojogux.rf.gd/chicago_blackhawks_schedule_2019-_20.pdfIn PDF document text
    • http://lifugefumiwikoz.epizy.com/14898673018.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/introduction_email_to_colleagues_template.pdfIn PDF document text
    • http://lilufafuf.epizy.com/atmospheric_pollution.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/bang_bang_title_video_song_free.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD31 5632 bytes
SHA-256: 0f00766b59327abcafc13346e49bce1778eca22f800489ecef7eeb81be532f54
font_01_sfnt_off0000e034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE034 9764 bytes
SHA-256: 25a71eb85c2265499340dc9b3d686f691df1d271214efcf6757572450daaefc9

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