Malicious PDF — malware analysis report

Static analysis result for SHA-256 520297e975b9558b…

MALICIOUS

PDF

76.9 KB Created: 2021-03-15 01:04:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 3ea3b59a211e0f7480e4118c4f2190ef SHA-1: a3db7e26eb24541f652ba1dad811bbdaefa7e352 SHA-256: 520297e975b9558b5fe1312cb543cc5de71d7397a8516aced1270b4d58fbed62
194 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are hosted on disposable domains and appear to be part of a link farm designed to attract users searching for movie downloads. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a workflow aimed at redirecting users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/strik?utm_term=maze+runner+the+death+cure+full+movie+download+in+hindi+filmyzilla PDF link annotation
    • http://uanews.website/what_causes_high_intestinal_motilityfikb4.pdfIn PDF document text
    • http://ch-bewertung-2888.xyz/qumi_projector_q3_manualxdlsr.pdfIn PDF document text
    • http://lighterusb24.site/samsung_top_loader_washing_machine_user_manualukpus.pdfIn PDF document text
    • http://all-gopro.com/riguv93fr9.pdfIn PDF document text
    • http://cocobeautybar.ca/xipesowedjxri7.pdfIn PDF document text
    • http://bizbize-yeteriz.org/ic_engine_parts_diagram7fv7b.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/518858936174v79k.pdfIn PDF document text
    • https://fepobiwebefu.weebly.com/uploads/1/3/4/5/134592484/roretopabiruvifusew.pdfIn PDF document text
    • https://giduzuzetedeze.weebly.com/uploads/1/3/4/8/134853145/d2bd3cfdc35501.pdfIn PDF document text
    • http://fitnesspack.net/are_hannibal_and_clarice_in_lovew2yln.pdfIn PDF document text
    • https://japafapu.weebly.com/uploads/1/3/1/4/131437770/6626967.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://efed9c07-4553-4484-a419-1b844d271aeb.filesusr.com/ugd/6f475a_4bb2e81da53547cfa72de88756627ee2.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d22c0149-ac69-4f2b-b71f-f308b9a35182/17549822477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bdd2261-91d1-4ed3-94de-ba70e9dab906/how_to_write_differences_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ea3293-de7a-4759-9adb-507c4b56c12c/71862552645.pdfIn PDF document text
    • http://duxepivol.myartsonline.com/movie_maker_app_free_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6b3052b-b6b8-482a-b7ac-3c9ac9396aab/champion_2000_watt_inverter_generator_carburetor.pdfIn PDF document text
    • https://a3e8d6b6-68ee-4625-a313-a25a09dbd39d.filesusr.com/ugd/312e12_0ef30877c16444ca9e57bb977624b8af.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/450ce27e-9735-4a56-bfb2-2d8924bc8f3a/mifigimejagedeteruvuzo.pdfIn PDF document text
    • http://gajopule.myartsonline.com/does_jersey_mikes_have_free_delivery.pdfIn PDF document text
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_75a1b1241404426e87fa707dc684c502.pdf?index=trueIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5D 5392 bytes
SHA-256: aaf5bd80d6ef60aed42954bc9f9dc8268c3dfe42a3a42fb8c8ef7a307445f31d
font_01_sfnt_off000100ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100BA 10848 bytes
SHA-256: 2b399d1f4a2e90c53febccfc74e6c7772eee80673355e509fd3f1962f5262127