Malicious PDF — malware analysis report

Static analysis result for SHA-256 268019a463506079…

MALICIOUS

PDF

143.5 KB Created: 2021-07-26 17:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 6eccbafc778aaf4bbe207b6743a465a3 SHA-1: a3a41d89adec6259ca86bd2909eecb2c100e361d SHA-256: 268019a4635060795e3fcad19a10987cf889165ce5d6d79bf123ad90986bb51d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to numerous disposable domains and compromised WordPress upload storage, indicating an attempt to redirect users to malicious content. The presence of multiple external URIs and a link farm heuristic strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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 http://vhshf.de/File/mobezoguxir.pdf In PDF document text
    • http://studiopassarotti.it/userfiles/files/60421511584.pdfIn PDF document text
    • http://maihome.hu/admin1/file/bovawesok.pdfIn PDF document text
    • https://juegosinflablesarizona.com/files/49819279687.pdfIn PDF document text
    • https://villamishkan.com/310renonew/front/images/files/lifilisagozasimovejefo.pdfIn PDF document text
    • http://kingalbertltd.com/uploadedfiles/file/83423149986.pdfIn PDF document text
    • https://memoservicesrl.it/file/tijiguzesoximejidujedi.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/20265296109.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/bosamemepadab.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/t1uhhhqragfmvrrn0rfo2e1kj1/28779188303.pdfIn PDF document text
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/kdudaujdnb7e6n15uum27iqsj3/23981734092.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d3f4a00601---zowipoxeniz.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/85704328933.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/83dc00cfdae8fccc6ab2f6409528f084/59907663061.pdfIn PDF document text
    • http://fd-health.com/upload/ckeditor/files/lewemerarumukoburozozibu.pdfIn PDF document text
    • http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/49b8a0ccb4ec446d1047b55719fa8690/zabiraxote.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1608041786336a---xubugekibipowerig.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/11d89d9c8235113fbd95ed09898903ec/pukajin.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/26ec8299e1ab62d04bc09ef45ad8ffdf/fozasilawifa.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/f8efb868455ef6830184427c4ae8d19d/91784260716.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089888933f0a---baxekoju.pdfIn PDF document text
    • http://mextro.de/upload/files/wokobuxumizo.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/48984fd92ae62dfb0c5f499781410365/79218202397.pdfIn PDF document text
    • http://elm3rad.com/file/33763272509.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=why+does+my+whirlpool+fridge+keep+beepingPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001c3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C3EE 11112 bytes
SHA-256: 9e8e0a96d74a4cd810ce117910b4b650e8133de48ec3ce52334c69a932704fa6
font_01_sfnt_off0001dd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DD30 22636 bytes
SHA-256: 990899dde15983e0dd673d70802b42e4d63e9c369285a4634487ff7cf8d72e07
font_02_sfnt_off00021650.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21650 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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