Malicious PDF — malware analysis report

Static analysis result for SHA-256 7701184abb94c6f6…

MALICIOUS

PDF

97.5 KB Created: 2021-07-02 22:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 05f34b4c4f96cc2c2e53a15d741e849b SHA-1: d8803f2c3547466d1a46156259b58ecfc5217407 SHA-256: 7701184abb94c6f630182628130d212b29fede9b7fe6ebfd3d1eca0e0b53bd21
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains heuristics indicating it is a link farm and a lure for invoices or payments. Multiple URLs point to compromised CMS upload storage and disposable hosting, suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs strongly suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://iseveranscopy.com/upload/editor/file/fogaw.pdf In PDF document text
    • http://usaoxin.com/userfiles/2021-5/file/30186984064.pdfIn PDF document text
    • http://vantaibactrungnam.vn/upload/files/ralirororuliviw.pdfIn PDF document text
    • http://agataklimowska.pl/userfiles/file/zazobovizunatukozabiloke.pdfIn PDF document text
    • https://planet-for-events.de/userfiles/file/pozamupitozovotezodilew.pdfIn PDF document text
    • https://eatorhours.org/e-bussiness/fckimages/file/bebojekowufeja.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/d94e3ffsb13rt0g7n8jj4eh64t/juxoxulolovu.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a61428bfe6d---40409974886.pdfIn PDF document text
    • https://dintek.eu/uploads/file/nutalenimelefiputefigif.pdfIn PDF document text
    • http://tlumacz-lipno.pl/pdrzewiecki/files/6962761801.pdfIn PDF document text
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f4237a388---vaziwi.pdfPDF link annotation
    • http://ownlines.com/upfiles/file/lefozozibiwarixero.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/160925ef3ecdfe---48626470375.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608eee7b6d051---85722429661.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c83552c9a1---8148005413.pdfIn PDF document text
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/4e1a84c3fb8302ae05c112173a1c01ef/14714823598.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160be50ee368f8---gupewej.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/rizubuvularijikikavibi.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160916ffca0eb2---resajer.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609ebb559c931---niwirapo.pdfIn PDF document text
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/509caed5efe2cba982dc157a51050aa2/57255880340.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/2987fea531ca5794c31212836e435141/ximipu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=list+of+debit+and+credit+items+in+accounting+pdfPDF 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_off0001191b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1191B 17592 bytes
SHA-256: 7e05ae61b6ec67612b97b2c49b68156d4aa8c3c3eb662fb707cd9812d7775ba6
font_01_sfnt_off00014704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14704 11112 bytes
SHA-256: 147deedb0c8f4a71bddd83d43e0fa138b9287128ebb4b0a3892caf6be5211714
font_02_sfnt_off00016092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16092 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1