Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b32d8668a2e680a…

MALICIOUS

PDF

75.9 KB Created: 2021-04-01 12:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0b320a2c549be317a61bb5e4ef2006a7 SHA-1: c70c46577e6ae72cc296c05052861db1b32b6d0b SHA-256: 4b32d8668a2e680a099eaab76d330ca7b4fedff63f4044c0fd844658254b0338
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, disguised as a search result for clip art. This suggests a phishing or scam attempt to redirect users to a malicious site. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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 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://xajibur.ru/wix?keyword=dr.+seuss+characters+clip+art PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455658/normal_6011e5e8e0fe9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366961/normal_5ff5799cd69ff.pdfIn PDF document text
    • http://zonokiwuwagupu.getenjoyment.net/modern_history_of_china_podcast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450506/normal_604f310f4bcd3.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/bharat_ka_map_download.pdfIn PDF document text
    • http://wedidizelajat.mypressonline.com/39004088439.pdfIn PDF document text
    • http://limecash.xyz/setenamunupepejemino82su0.pdfIn PDF document text
    • http://chambre.xyz/jevarovidatewuzurafijevacgcf.pdfIn PDF document text
    • http://jepewadagamer.scienceontheweb.net/is_cyberpunk_2077_playable_on_ps4_slim.pdfIn PDF document text
    • http://baffer-shop.space/adb_stop_android_applicationzdrq3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457838/normal_6008331c6759a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9f26611-62be-42dd-9b62-7f2d058ca450/integration_of_cosecx_cotx.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2330d9ed-59e6-4b6c-b531-06ef61fdea2f/29554897130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/261e28e5-a40b-4cc4-afa3-c1d339e844fa/xugez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb0d082b-3b1d-46ae-b51d-888418d62af3/32763560995.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa4c5d7-c515-4193-9eca-93a4c35bb4f0/38826041133.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cdde3de5-3d97-40eb-85a1-090f67c5e2b9/juses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7224411-5939-4d37-bbb7-9116ed0682e6/47302136472.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5ea1151-a602-4d5e-8658-1be1667796ec/how_to_tow_a_single_wide_mobile_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf204b4e-12c8-4857-88a6-10231a31955b/fedisawuzelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35834b72-551d-4cb2-87ef-e291daca8eb2/logexew.pdfIn PDF document text
    • http://faleferesevo.onlinewebshop.net/medical_fitness_certificate_tamilnadu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bce87fb5-42bc-4813-8a8b-77a65b0dbbbd/preposition_song_lyrics_with_on_for_after_at_by_in.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9303f010-d168-47c5-a7b6-f0dd92b05686/we_the_animals_cast.pdfIn 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_off0000ed12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED12 5052 bytes
SHA-256: e84f56ac3bcf6e803aac68d9a80815982e255437624591ac563c0edfc95c20f5
font_01_sfnt_off0000fe47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE47 10632 bytes
SHA-256: 7c92fb08551aa00f14bc393b5ce97a025ffc4d2e6b3d30dd401c92768e12da44