Malicious PDF — malware analysis report

Static analysis result for SHA-256 60a46ec15a5be8c3…

MALICIOUS

PDF

81.1 KB Created: 2021-09-13 02:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: fee6e7db9c9504e598f1b599fdf4d5d4 SHA-1: 38b31223e748f182f0381f7a48f9f135f6759a4e SHA-256: 60a46ec15a5be8c3b9c9d5701a62a83587df62b448f2d9959000d193ca9e8204
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which are hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the URL structure and heuristic firings point to a common tactic of using link farms for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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://smidgel.ru/uplcv?utm_term=peter+rabbit+full+movie+in+telugu PDF link annotation
    • https://biholka.cz/uploades/userfiles/file/mewigixuralabukozu.pdfIn PDF document text
    • http://lutechmed.com/Images_upload/files/padagenodev.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/786o5sbktju3mbhbleari2c249/kinopeve.pdfIn PDF document text
    • https://ags-car.com/upload/files/51836980087.pdfIn PDF document text
    • https://produktybhp.pl/pliki_user/File/metefuga.pdfIn PDF document text
    • http://allineers.morefriendship.com/upload/files/83145168282.pdfIn PDF document text
    • https://idealist.ro/userfiles/file/kuvuja.pdfIn PDF document text
    • https://kominove-centrum.cz/media/files/file/rusipujuteduvopi.pdfIn PDF document text
    • http://csc-028.com/userfiles/file/20210908145933_h8hvzx.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/161385b890f379---xetim.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/lovum.pdfIn PDF document text
    • http://showdoimovel.com/files/files/69019578446.pdfIn PDF document text
    • http://qwerty.pl/_data/file/72267049013.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613749d1dc515---49047820138.pdfIn PDF document text
    • http://karaokejdi.com/ckfinder/core/connector/php/upload/files/xojobusenobu.pdfIn PDF document text
    • http://massimobertoarchitetto.com/userfiles/files/10294519132.pdfIn PDF document text
    • http://needychild.org/ckfinder/userfiles/files/99689451398.pdfIn PDF document text
    • http://schoonhovensvrouwenkoor.nl/ckfinder/userfiles/files/87320969051.pdfIn PDF document text
    • http://thaimassageboy.com/ckfinder/userfiles/files/sojuwagewi.pdfIn PDF document text
    • http://sanga.asia/userData/board/file/biluraweg.pdfIn PDF document text
    • https://khogiaydantuonghanquoc.com/images/news/file/68991807674.pdfIn PDF document text
    • http://luchetti.it/userfiles/files/bubekoduwebara.pdfIn PDF document text
    • https://mchs.kz/userfiles/File/23821034920.pdfIn PDF document text
    • http://mobil-tech.com/files/92893783263.pdfIn PDF document text
    • http://geometracosentino.com/userfiles/files/42834926794.pdfIn PDF document text
    • http://lube-stc.com/ckfinder/userfiles/files/44381249646.pdfIn PDF document text
    • http://iranjobex.com/cache/fck_files/file/53427393828.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_off0000d650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD650 18384 bytes
SHA-256: 3d6cd89db53d5053f1baa5bca7422f34812fad2ad4e934fe65955645468f6cb8
font_01_sfnt_off00010666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10666 10696 bytes
SHA-256: f27f4ad25b953f7d7bb9ea0135b5b08ea228ab6ad4473772a82bc51d136505a2
font_02_sfnt_off00011eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EEF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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