Malicious PDF — malware analysis report

Static analysis result for SHA-256 711f7784de5776fc…

MALICIOUS

PDF

75.0 KB Created: 2021-03-08 19:50:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 19a453cffef3acd75edb5a6d35dbbfe3 SHA-1: 925590ad707c1ac631a3339f907ffaf594e26857 SHA-256: 711f7784de5776fc9f069708622f898ce8b139ce7d9cd10ed4a09f914f8e4346
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a significant heuristic firing indicating a link farm designed to host malicious content. The primary URL, https://vilenefex.ru/award?keyword=amadeus+movie+worksheet+pdf, is suspicious and likely serves as a lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to malicious sites, potentially for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/award?keyword=amadeus+movie+worksheet+pdf
    • http://chambre.xyz/puzapu5xqzy.pdf
    • https://cdn.sqhk.co/dasadogiso/ijiY8jg/92812888048.pdf
    • https://cdn.sqhk.co/tuminageka/dxYzMPd/wufarikuzanojowaxugotumem.pdf
    • https://cdn.sqhk.co/ramawuvade/SjaMhy6/bavesiraxu.pdf
    • http://pitushok.space/45796604987qgmak.pdf
    • https://rejasujewefem.weebly.com/uploads/1/3/0/7/130738882/wolizoseder.pdf
    • https://mevavenepid.weebly.com/uploads/1/3/1/6/131637679/muxugelo.pdf
    • https://cdn.sqhk.co/zadexona/cH75pgf/modern_warfare_patch_notes_1._23.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tudawufed/dedofuwujajusud.pdf
    • https://s3.amazonaws.com/xamibebulosaxug/change_google_email_password_android.pdf
    • https://uploads.strikinglycdn.com/files/77d99198-7c8b-46a4-b775-e7f6307b3693/what_is_sequence_connectors.pdf
    • https://s3.amazonaws.com/ribowexulo/62933127762.pdf
    • https://uploads.strikinglycdn.com/files/33beb14c-face-4ff6-98de-15ed4d284b4e/39698864402.pdf
    • https://uploads.strikinglycdn.com/files/98a14698-d6fb-4190-a691-062802c6244c/hp_deskjet_6940_printer_specifications.pdf
    • https://s3.amazonaws.com/varolexexus/petik.pdf
    • https://s3.amazonaws.com/nutanigonu/brain_teasers_with_answers_interview.pdf
    • https://uploads.strikinglycdn.com/files/42dc3f73-92d6-42e3-800e-b5b027b55413/6885781533.pdf
    • https://s3.amazonaws.com/pirosisob/badgery_creek_airport_information_centre.pdf
    • https://s3.amazonaws.com/zunaduxa/def_of_baculiform.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8e1.bin
977b5202a4224b2b9c13abe23c1deb751c7d6366b9aac2637363a6acc0c481da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E1 5452 bytes
font_01_sfnt_off0000fb55.bin
bb4104a199f94dee4327e3c0478fd018f73405f72e27db683103517792eb74b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB55 10276 bytes

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