Malicious PDF — malware analysis report

Static analysis result for SHA-256 e56fca08fbabd2bd…

MALICIOUS

PDF

75.1 KB Created: 2021-06-05 20:51:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a7c2f13e241b9c4de7a6e8287538a6de SHA-1: be173d595186e8660c51fd1b40e3d087e4d3519b SHA-256: e56fca08fbabd2bd1e50ea15e1688f36fbebf86537167546d3f8137cf1a3d9a3
126 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and heuristics indicate it functions as a link farm, directing users to potentially malicious sites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The primary lure appears to be a fake search result for movie downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://catamma.ru/pbw?utm_term=best+bengali+movie+download+site+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387565/normal_5fca5fed8ec87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425507/normal_604423dc13a44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401559/normal_60164957c7038.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/def50ff6-fc74-49f9-ab1e-93d8ce7abed8/78656992740.pdfIn PDF document text
    • http://rujuboxu.pbworks.com/w/file/fetch/144560490/sebujukagotanopifutob.pdfIn PDF document text
    • http://kikipudojuzo.pbworks.com/f/57675145553.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e0cc96b-341f-47ac-b6bf-9ae08c341bf8/wufagemulogagajijawig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66714e42-9cfe-4635-9fb7-09c5890a28a8/47494260097.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15946301-3a53-433b-8894-d077d8fb5626/how_to_use_autel_maxiscan_ms309.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92aa7bbd-659b-4578-95cf-c280338cb1d4/tavofugijeb.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/w/file/fetch/144444129/blade_2_full_movie_in_hindi_free_download_filmyzilla.pdfIn PDF document text
    • http://padimagofo.pbworks.com/w/file/fetch/144595812/which_is_the_best_sites_to_download_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cec793f-03e5-46c2-adb2-13c109ba1d0e/lixosasiwurejidesuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d85b787c-59c1-418c-8318-1b8c3493f213/how_to_find_linear_speed_in_feet_per_second.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/662801bf-0298-4b8c-95c4-f80b0c7cda10/how_to_reset_romoss_power_bank.pdfIn PDF document text
    • http://wikoborumun.pbworks.com/f/vizio_smart_tv_bluetooth_connection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c7bc20e-abbe-42ab-9642-d2c56ab2bf46/can_you_cook_a_standing_rib_roast_in_a_pressure_cooker.pdfIn PDF document text
    • http://garigor.pbworks.com/f/second_conditional_exercises_multiple_choice_online.pdfIn PDF document text
    • http://pitavumiza.pbworks.com/f/galipizimu.pdfIn PDF document text
    • http://giresizuloki.pbworks.com/w/file/fetch/144619209/how_to_make_a_weight_loss_calendar.pdfIn PDF document text
    • http://fokopaviwu.pbworks.com/f/company_profile_sample_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fdeea43-b959-483b-86f4-0f0c71545958/4617508786.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_off0000e7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CC 5568 bytes
SHA-256: 9503114ec09d67a3e1c7700865bdd3a8e1c6f5dc264a22d190d2c6c0c3acaec6
font_01_sfnt_off0000fac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC1 10660 bytes
SHA-256: 25dd75c3f1572d9d530932162191435955468db4e220c24ec03ab91b17b09427