Malicious PDF — malware analysis report

Static analysis result for SHA-256 95b7627c889a56a5…

MALICIOUS

PDF

85.0 KB Created: 2021-07-18 16:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 7c44f05d91b19ee42024841083e84aa4 SHA-1: 363bc7b5fdfb7f39e12d3596cb20dc9cfbb0d49b SHA-256: 95b7627c889a56a5029686730f43a3ad0d3f5c1bae0165a138a9f8a70a2c45f2
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised websites, some of which host further PDF files. These links are likely intended to redirect the user to phishing sites or download additional malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • 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.
  • 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://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/b18953786c195b74fed8168b45ba32a0/zopamotiwawetadowodepimad.pdf In PDF document text
    • https://ludifrance.fr/userfiles/file/muzorufom.pdfIn PDF document text
    • http://pospatrans.cz/UserFiles/File/20483537017.pdfIn PDF document text
    • http://auchli-appenzeller.ch/userfiles/files/11815071161.pdfIn PDF document text
    • http://princeton1959.com/clients/863834/File/43907870424.pdfIn PDF document text
    • http://www.awakohchang.com/image/upload/File/0438676513.pdfIn PDF document text
    • http://gidaero.com/upload/fckeditor/file/gagamiz.pdfIn PDF document text
    • http://bamt.be/wp-content/plugins/formcraft/file-upload/server/content/files/1607e55fb95dec---vukazajefuzetijobudi.pdfIn PDF document text
    • https://vokalensemble-vocembalo.ch/userfiles/file/53841000402.pdfIn PDF document text
    • https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/61b1488003cae7e3593fdc3ef38057a8/pegorufotifeta.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/ee0c76dbacb5d2317d6a219a4a656a04/9028963909.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e398aa2e41---27382467878.pdfIn PDF document text
    • https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/29e3ad8bdb5c443e512f6ec090b50d4e/nexanowixul.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c51c95a9abd---2375011037.pdfIn PDF document text
    • https://luxmarketing.agency/wp-content/plugins/super-forms/uploads/php/files/arlmniih2juq9i5rj0umege9b1/fipesapob.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609ac521a0405---xumesunupaxo.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc9b98a1d6---tozebakipuzero.pdfIn PDF document text
    • http://velkoobchod-man.eu/ckfinder/userfiles/files/91442469747.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160c6918d90fd5---masiritotusepaniga.pdfPDF link annotation
    • http://abacusnancy.com/userfiles/file/tebetagitoboxabamu.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16072889c63576---18429898885.pdfIn PDF document text
    • https://bestcoloringpages.com/userfiles/file/21032637768.pdfIn PDF document text
    • http://ilksolar.com/Images/Media/files/mokokerojorizizokir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=busch+for+the+farmersPDF 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_off0000e907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE907 10512 bytes
SHA-256: 62fb975515c98e7449b196675a5b1200d21684a1af5f519d29f9f8012c0d13e9
font_01_sfnt_off00010113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10113 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11925 17336 bytes
SHA-256: 7e4152ba0b67fac805a006989ca83d5dc5909e9787dae9aec495d2289d26e34a