Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e7627b1d3a70f5…

MALICIOUS

PDF

83.6 KB Created: 2021-09-08 01:03:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 8f1b344699ec684f4012cdd283223f43 SHA-1: 213297520046e5ffcfa7025251d70884700f1e5b SHA-256: 62e7627b1d3a70f542594a3dfe3e5c2092f7ec4e64ab3982be66588e596ea127
156 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it's designed to lead users to malicious content or phishing pages. The presence of PDF link farm heuristics further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 6

  • 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
  • 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://ketchas.ru/uplcv?utm_term=relaxation+exercises+for+anxiety+pdf PDF link annotation
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d35cea4aad4---40119117883.pdfIn PDF document text
    • https://invest.pl/userfiles/file/pepuwomol.pdfIn PDF document text
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ef0679c6b---kusupemazaxetaro.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b093cb39d23---61514410754.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16070cedac6f81---71219693367.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/292231f5833ebb05906bc1693d0a7ddf/seduduwebiwelijalokogut.pdfIn PDF document text
    • http://519pf.com/userfiles/files/vemazikosamuwa.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160841cfd909c2---25896907439.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d66d44ae637---watudavij.pdfIn PDF document text
    • http://zaiger.ru/img/file/40962229940.pdfIn PDF document text
    • https://aneri12.eu/res/file/81190362609.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb97237fb6f---winaxumikotefej.pdfIn PDF document text
    • https://ktmcollege.org/public_html/userfiles/file/futojugakel.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/mfsgfvi474mrf9mmnhrlk0131i/joraf.pdfIn PDF document text
    • http://xn----7sbakif2a3azdub.xn--p1ai/admin/ckfinder/userfiles/files/mexabapijadoxegofitid.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b12e67b5754---37420962243.pdfIn PDF document text
    • http://lixupeng.com/uploads/files/7020386496.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160a427062e076---kiginomitokonu.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/24fbd33a0e6727bdf67957ce2eb14779/zifirasaxakazolesipiguj.pdfIn PDF document text
    • https://cowichanmusicfestival.com/userfiles/file/9326660598.pdfIn PDF document text
    • http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/pujoxitubamekafonemiva.pdfIn PDF document text
    • http://fxmeat.com/upload/file/c5887c1e23b02df118f043879b93aba5.pdfIn PDF document text
    • http://chiesamadremarsala.eu/userfiles/files/sumitepatowazebojo.pdfIn PDF document text
    • http://www.mezmat.ru/ckfinder/userfiles/files/bapebudetemafudefoxov.pdfIn PDF document text
    • https://www.educazionesessuale-scuola.ch/ck/ckfinder/userfiles/files/82018853724.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE209 17400 bytes
SHA-256: aa7325785556dc0f0f894589fb20ca82f58f808151e272afde1c7d3bd05cde61
font_01_sfnt_off00010f67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F67 10876 bytes
SHA-256: 583a0f8a21dca1104587d458a46c882e28a34541852661ac30e0ede94a1a91ab
font_02_sfnt_off000128b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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