Malicious PDF — malware analysis report

Static analysis result for SHA-256 a742415959d527f7…

MALICIOUS

PDF

82.0 KB Created: 2021-09-15 03:10:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 43871eca74b07b6c1c8a023cda0f1b6a SHA-1: 2c71536b24d8bd338e2ebfad70e2c8917ee44bac SHA-256: a742415959d527f747c2c94fca07d47490287d7ef6b921fa988d7b45e6d03498
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as a link farm and a phishing trojan. It contains numerous URLs pointing to various domains, many of which appear to be compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://myphamasia.net/upload/files/14430597376.pdf In PDF document text
    • http://dgkno.cn/upload/mavebejatoronasupev.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/19321a14f9e4291be7a3ec14f143df75/doratevow.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16141136592b28---15635735897.pdfIn PDF document text
    • http://harnettcountyhba.com/userfiles/file/mexane.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/hljqiotbkcpet4s1tcl7qjgup6/kogiwunaw.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/7b369acd65ae1d01e17d71a08ba511ac/3880299980.pdfIn PDF document text
    • http://www.chinahkcarplate.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614111b440607---16079957842.pdfIn PDF document text
    • https://slide-bearing.com/d/files/95883813060.pdfIn PDF document text
    • http://getsolarnj.com/userfiles/file/lugabeneduvogilikem.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/9173174573.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/pke7bf2cn6otndsl7ec6ra9nqj/suzazitosepujivi.pdfIn PDF document text
    • http://lactopad.com/uploads/files/36397102048.pdfIn PDF document text
    • http://merydian.pl/nowymerydian/userfiles/file/39812031158.pdfIn PDF document text
    • http://vietdubai.com/userfiles/file/14120254076.pdfIn PDF document text
    • https://cengilli.com/icerik_images/file/vapipanipetegapeve.pdfIn PDF document text
    • https://silverbirdmarketing.com/pages/images/file/tuxoze.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/536239deac2a8c6841ac1f17c5babfa0/buzosazeni.pdfIn PDF document text
    • http://nieruchomosci-swidnica.pl/userfiles/file/gegemerebap.pdfIn PDF document text
    • http://minerva-collection.net/files/files/fipuvojux.pdfIn PDF document text
    • https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614112a81069b---68016325186.pdfIn PDF document text
    • http://beloezoloto.ru/userfiles/file/31596526637.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=shadow+fight+2+hack+moneyPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6F 17704 bytes
SHA-256: bf8d28a91b1320582ca4e6934c1928a0067a192aa23d83288395ac4723b891df
font_01_sfnt_off00010965.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10965 11096 bytes
SHA-256: c0d1f8128e82168b289c0d7cd094f95e376588c169137f2ce28d5e06162b051a
font_02_sfnt_off00012310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12310 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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