Malicious PDF — malware analysis report

Static analysis result for SHA-256 9deab3501569ab70…

MALICIOUS

PDF

86.0 KB Created: 2021-09-01 05:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 624a3ff0ce29e1530c1d5a097803310d SHA-1: adbf0ab161b81a9a6a7142c312a3171c807b82e9 SHA-256: 9deab3501569ab70a84a5efbc3b6d79e94045188746ee0a771e507982215cfa4
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised CMS upload directories, suggesting a phishing or malware distribution lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves directing users to potentially malicious content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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 https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/3oedljqjj16q25mbr63p94e2gv/xudabotumom.pdf In PDF document text
    • http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/dda460d0d68c980f329cef266fbe74ff/xafejajelupatibiloji.pdfIn PDF document text
    • http://xn--xhq021fvrwdth.com/d/files/18166398978.pdfIn PDF document text
    • http://kentcliffordreunion.com/clients/a/aa/aa84b18e55fac3ff3c25336c5005d9e5/File/davomakekumefuzewe.pdfIn PDF document text
    • https://koncnc.com/genelresimler/file/gedinuno.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b0f9cb23b---95715282831.pdfIn PDF document text
    • http://sunjewelsonline.com/userfiles/file/susopewugevopoto.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b0668028959---7143761377.pdfIn PDF document text
    • http://apvn.info/userfiles/file/90148046082.pdfIn PDF document text
    • http://bibikid.ru/upload/kogugir.pdfIn PDF document text
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080c4337f148---metebaporofinuzokut.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/j070u33o0a2n5n4dbtb6vh5lbb/xoxunerovegolaruko.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160954d1b27e4e---47087851691.pdfIn PDF document text
    • http://feriaalainversa.com/uploaded/files/54312014046.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/saxunixuwijolo.pdfIn PDF document text
    • https://stmpallet.com/ckfinder/userfiles/files/tufofozifofofanuwazemod.pdfIn PDF document text
    • http://proxima-design.cz/files/file/39043488409.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/f47c73ij130k2nrtrbc3mcn14s/94903156807.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cbb79f1514a---nuxusevezunopefuwi.pdfIn PDF document text
    • https://driftwoodcc.com/userfiles/files/palulofod.pdfIn PDF document text
    • http://hevolta.com/upload/file/60707175370.pdfIn PDF document text
    • https://shopexpert.com/app/webroot/files/userfiles/files/xikegolovosugo.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16086c9abe3bf5---11210499154.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f51568db82e---gafumobovufozanu.pdfIn PDF document text
    • https://hijaustabilo.com/contents//files/48690739015.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/5558035770.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=yellow+plus+brown+colorPDF 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_off0000ec91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC91 10324 bytes
SHA-256: b847ca05e84a6e784069a2fc59e8f6225917597abe61ac39b2584e9be37e1c58
font_01_sfnt_off000103ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE0 16968 bytes
SHA-256: 63ecbf1c7c5147d4c750ab6ff271b3e5bff4dd179c78096bd278066153eb09b1

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