Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e0fa60d450a7e9…

MALICIOUS

PDF

84.4 KB Created: 2021-09-17 09:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 6f04551a8722541fe86a3e000a1ddb72 SHA-1: 458ec0f6be46c2eafb09bf7138e4bdb56c639099 SHA-256: 63e0fa60d450a7e9caf65846fc1701307752a78a8a3d5eb2a341dc89a7ea3ad1
176 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. The heuristics reveal a link farm strategy, with numerous embedded URLs, including one pointing directly to an IP address (211.129.1.225) and others hosted on compromised WordPress sites. This suggests the document is designed to redirect users to potentially malicious destinations for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9930

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 http://www.civilhospitalpalampur.in/img/uploads/files/sebudevujukidofunonakez.pdf In PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613b904c54732---48968015022.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134f3ec8aa5a---48609586706.pdfIn PDF document text
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143f16dae265---6571894015.pdfIn PDF document text
    • http://thicongdiennuocmiennam.com/uploads/files/94648936453.pdfIn PDF document text
    • https://zifu-tech.com/app/webroot/userfiles/files/xalegumitejuwapidor.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/6a8e0591f217560f4b1f2ffd3bbeeca6/razukoborijonu.pdfIn PDF document text
    • http://canphantich.net/Images_upload/files/25774605242.pdfIn PDF document text
    • https://digireg.at/upload/gaverunegenitadoxepa.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/94856909018.pdfIn PDF document text
    • http://www.forteks.com.br/admin/ckeditor/ckfinder/userfiles/Images/31618767419.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/161362ed54880a---jurevivubadawavid.pdfIn PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/86499454525.pdfPDF link annotation
    • https://upaspor.com/resimler/files/52410616142.pdfIn PDF document text
    • https://emotionalgift.com/ckfinder/userfiles/files/vusevoxopul.pdfIn PDF document text
    • https://zenithoverseas.com/assets/userfiles/files/wuvubafagobekokenojifuge.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cd288559c2---89604357256.pdfIn PDF document text
    • https://aiwatopup.com/ckfinder/userfiles/files/raberikagotapebeligi.pdfIn PDF document text
    • http://runo34.ru/attachments/file/20779152322.pdfIn PDF document text
    • https://deshpanday.com/ckfinder/userfiles/files/8742454752.pdfIn PDF document text
    • http://malagi.pl/user-files/fck/file/mulorudaxugupuxiguv.pdfIn PDF document text
    • http://tomdythai.com/userfiles/files/wuvig.pdfIn PDF document text
    • https://semineebrasov.ro/printuri-fi/files/53797491359.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=samsung+tizen+wear+osPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c893.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC893 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A5 19884 bytes
SHA-256: 0860b06c823ae5f0dafd9f4e9fb789602ba285a60de085c307491124eb1a9fcf
font_02_sfnt_off00011591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11591 16148 bytes
SHA-256: b17e3c388ca520c70044df51a505a8c8de3d1ca9b2e495c629779bc8d31aca59
font_03_sfnt_off00012b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B21 10728 bytes
SHA-256: 1a57537ce8936c37b4b6457b1d76469583a89f9fe1ddb703c6f11918a091ddd8

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