Malicious PDF — malware analysis report

Static analysis result for SHA-256 562f701f787f8ef5…

MALICIOUS

PDF

96.7 KB Created: 2021-08-13 13:44:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: d414029eb0083f7699070d9b8f9d9c84 SHA-1: b6c63be899da89f1fc6361603bc1bdf3e57c52d4 SHA-256: 562f701f787f8ef500a7651528df7f2cdcaed9506d0ea573f2f9b83869265cca
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress installations, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the presence of a link farm is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f59050460---32070655728.pdf In PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/160931d5d5103b---tezexizomuvimutoxijezedu.pdfIn PDF document text
    • http://blissworldbeauty.com/newerac2c/userfiles/file/robabipakirefapivamavet.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/mofusu.pdfIn PDF document text
    • https://pilotcenter.gr/wp-content/plugins/super-forms/uploads/php/files/sgkddf3gk98u9q98asrbils499/feseditut.pdfIn PDF document text
    • http://eraucheta.ru/uploads/file/7452387866.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607600874dffb---munutoxugibekatafukebegi.pdfIn PDF document text
    • https://sportuna.be/ckfinder/userfiles/files/97825134236.pdfIn PDF document text
    • https://memoservicesrl.it/file/tibilarapugu.pdfIn PDF document text
    • http://119hero.kr/userData/board/file/mabinizudim.pdfIn PDF document text
    • https://realestateconnect.us/wp-content/plugins/super-forms/uploads/php/files/6kbt3k7ac95mitnk2mptbv0i02/mujomisisuduniwago.pdfIn PDF document text
    • http://anapharmata.hu/ckfinder/core/connector/php/files/86172001017.pdfIn PDF document text
    • http://staceyasp.com/UserFiles/file/1868853016.pdfIn PDF document text
    • http://vetcarefoundation.org/userfiles/file/65599940793.pdfIn PDF document text
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16115945380e17---ladako.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608065edc63d3---zidosunopi.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/10b507061c9ad4a5199ee27bc0e32f21/vufixifusav.pdfIn PDF document text
    • http://skpizzasubs.com/uploads/files/19166635126.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/93446364473.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e31fdef2bc---32201095540.pdfIn PDF document text
    • http://sherwoodchambergolf.com/ckfinder/userfiles/files/33794916640.pdfIn PDF document text
    • http://xn--d1achljw0b.xn--p1ai/content/upload/rekoxitorij.pdfIn PDF document text
    • https://iamtimeshare.com/userfiles/file/79467413182.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=telecaster+body+size+mmPDF 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_off00011520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11520 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012d32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D32 18008 bytes
SHA-256: 4c8c74c71dbbe1c7df5e597ca9e3b6a39c6ba77606ba35bd2e80e1e0e1427121
font_02_sfnt_off00015cc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CC6 10704 bytes
SHA-256: f52aafe43f2cbaea1ec371d31a593213710fe86a27591b78ede1f6df24fba0cb

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