Malicious PDF — malware analysis report

Static analysis result for SHA-256 47fc2380b32d7ba8…

MALICIOUS

PDF

78.5 KB Created: 2021-04-19 06:45:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: d7a640298db95c950a525cf1546c8683 SHA-1: ed57b2a7782c4852faf8f72b074aec5624aa4540 SHA-256: 47fc2380b32d7ba81c5e0ba6fb66483b06fae1e6410fc80029163fc23c91de2a
226 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to disposable domains, suggesting a link farm or SEO poisoning tactic. The presence of a heuristic indicating a 'password-protected archive handoff' further suggests this document is a lure to obtain credentials or redirect users to malicious content. While no scripts were directly extracted, the PDF structure and extensive URL farm indicate a malicious intent to redirect users, likely for phishing or malware delivery.

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ponafet.ru/strik?utm_term=how+to+reset+panasonic+dvr+to+factory+default PDF link annotation
    • https://cdn.sqhk.co/nivavepe/7jjJXFI/red_snapper_fish_en_espanol.pdfIn PDF document text
    • http://50offshop.pro/1996_ranger_towing_capacitykkyjc.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/jjhdhjp/jesus_cross_wallpaper_download.pdfIn PDF document text
    • http://youralteragoods.com/scrooge_quote_about_the_poorlu6p2.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/Diaghjx/rise_of_kingdoms_best_commanders_to_level_up.pdfIn PDF document text
    • https://cdn.sqhk.co/fetedudi/jjhj5jj/fiwagi.pdfIn PDF document text
    • http://istlan.fun/destined_to_reign_book_reviewdk8hc.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/jp8idgi/32983430355.pdfIn PDF document text
    • https://cdn.sqhk.co/bunigenozav/ij7tRBo/ancient_battle_alexander_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/zokigalux/iajaLjb/photo_slideshow_template_final_cut_pro_x.pdfIn PDF document text
    • https://cdn.sqhk.co/pesamelez/jaTmtie/9341181950.pdfIn PDF document text
    • https://cdn.sqhk.co/fukonovum/HheaNjc/kaiser_permanente_rn_jobs_california.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Cm9jfWu/13324013923.pdfIn PDF document text
    • https://cdn.sqhk.co/givogaduta/sigVja9/28171428626.pdfIn PDF document text
    • http://legalvictory.group/76582326095qg5tb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://7a69a04d-b0b3-478e-a927-895b34d3dd44.filesusr.com/ugd/159848_1d8def0a16ac47f6980d877f98c65e0e.pdf?index=trueIn PDF document text
    • https://247e77cc-5367-4382-8586-7c5891409f42.filesusr.com/ugd/2dbf5a_86664761977d4759915da021db80db02.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae9e46e2-e3db-43e0-9584-f756b99e6241/99258365252.pdfIn PDF document text
    • https://297de083-771a-4730-a3b8-a2afe8c7d209.filesusr.com/ugd/47424f_6f58e6bfe90c4032a72a6b74997c995f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f64d3d1d-79fc-4d17-a16c-6284d9d952bc/lg_inverter_direct_drive_washing_machine_leaking.pdfIn PDF document text
    • https://96a9e3af-f0c3-4048-9e6c-0ad8da3c6018.filesusr.com/ugd/15d534_292b58ef1df0402ba9b0828a168bb05f.pdf?index=trueIn PDF document text
    • https://57933e30-1e86-4cbe-ad2b-777cb72f9932.filesusr.com/ugd/235f1a_ea48405c47614b9eba8f22fb6175b69d.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_off0000f4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A2 5364 bytes
SHA-256: 605d66c14f5ea2047ca3b505473a89987cf82f0b71d2d1494a1c244546bba23c
font_01_sfnt_off0001070d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070D 10956 bytes
SHA-256: 4318be9fbfbd1c356565abdf2b8337cd57963d6e8475a6024cdb636c3ac8ef5f

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