Malicious PDF — malware analysis report

Static analysis result for SHA-256 574bed40252ae915…

MALICIOUS

PDF

77.7 KB Created: 2021-06-23 07:35:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1e4f1460643d9f612c262c051c8e8b4d SHA-1: c85f06d3797ea7a77a6f9b0b7e2c10a9da00102b SHA-256: 574bed40252ae91567c3b924fb81b7e9da3ebdbb018933978694222add4052d8
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, directing users to various compromised CMS upload locations and disposable hosting sites, likely to download further malicious payloads. The embedded URLs and the PDF's structure suggest an attempt to disguise malicious activity under the guise of a 'weight loss diet plan pdf download'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9850

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://crysiq.ru/uplcv?utm_term=weight+loss+diet+plan+pdf+download PDF link annotation
    • http://brukbet.com/user_images/file/rewutuzaj.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088b366df128---58666538956.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/27168df7a902b93fc4a98c4d33e2eb0f/2636710924.pdfIn PDF document text
    • http://hungbuloon.com/media/ftp/file/ridovinowekubo.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/edb2889c998302b7e3e8731fff234537/75744793564.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d641d049d---19829248544.pdfIn PDF document text
    • https://bangprice.combangprice.com/beta/cms_image/file/43191752762.pdfIn PDF document text
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/lfj9bmbvbnomhc2gfp3a1fhen9/segevafatiwupefav.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160845eec68e60---legiv.pdfIn PDF document text
    • http://bygreenpure.com/userfiles/file/zereva.pdfIn PDF document text
    • https://vasantviharproperties.com/userfiles/file/gasulebezuviv.pdfIn PDF document text
    • http://rasmesafar.net/basefile/basefiles/1180417376.pdfIn PDF document text
    • http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b00c80657c0---bamawibozarovesop.pdfIn PDF document text
    • https://readxyz.com/wp-content/plugins/super-forms/uploads/php/files/4602f6c48a3522b1bce39358dd21b76c/zikit.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071875986cab---48544488228.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

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_off0000f887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF887 5312 bytes
SHA-256: b124087f46b785dfac36d73db9fe4c046b415f75d4aeebb779284e30df250b3e
font_01_sfnt_off00010abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABB 11396 bytes
SHA-256: 56b9086738aa0714eeb294c92c72099a97210f9a41d7042d19d042ae3902e72e

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