Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb69e2979a6cfc31…

MALICIOUS

PDF

80.9 KB Created: 2021-05-22 00:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 8a404a0fc1f8fcec3483f58fd7eac9c2 SHA-1: ec26017acbe675cf41cb8de112801953e045a714 SHA-256: bb69e2979a6cfc312c6a5c1c196d3fae7f021dd598e37ba6ce6b4690ac347287
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a movie title, directing users to a suspicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://druttle.ru/strik?utm_term=recien+casados+jaime+camil+pelicula+completa+en+espa%25C3%25B1ol PDF link annotation
    • https://wozomeki.weebly.com/uploads/1/3/0/7/130776066/golulewatobodilajado.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481272/normal_602aeb2bea664.pdfIn PDF document text
    • https://kasipuxatupar.weebly.com/uploads/1/3/5/9/135966953/ziwoxodazakor_mezexafude_rawenuwila.pdfIn PDF document text
    • https://wawodupalise.weebly.com/uploads/1/3/4/6/134621762/jerikugig-xidiwidopip-rajeboloxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451035/normal_605686a918c6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365608/normal_6010fd427d153.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/5d32a6cb-7d2b-452d-bb0c-79d0230a0c79/dorotezirinizumiweguzemoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9937fbc6-aaa0-49de-877e-841d96d0aabc/how_to_reset_spacetalk_watch_without_password.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43f5ac69-cf8c-4d72-bdfe-6b0c665a922d/74694182260.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/hiv_and_aids_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7c5d9a8-f736-46f8-bcf7-43859b6a3185/what_is_sonic_ocean_water_made_out_of.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c35f4b8b-2c40-4740-8633-84207259eecf/does_the_irobot_roomba_600_have_wifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4e9db98-4493-4570-81d0-0c39b941fda4/gipavuvizij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42433dd6-b8bd-41fb-ad20-40e166d985e1/what_are_the_traits_of_critical_thinking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/318d2b09-8c73-4021-b14f-af93a6f836c1/zegemofitasoretigal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f7b7a45-9350-4bd2-88d7-c5a69d9ad993/xowevozewopokuzal.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/fotetivevomigovi.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/where_can_i_buy_a_thermal_fuse_for_my_maytag_dryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4186018b-aefe-4283-8a6e-ea061bcf515d/over_the_rainbow_ukulele_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/866a6931-03ab-4b9a-9e22-d42ecda199cd/wing_chun_wooden_dummy_for_sale_south_africa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f395.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF395 5416 bytes
SHA-256: e99efa795ec4c5500e82203e06c5d05135399476df0444a7f1a4ca0fcac21245
font_01_sfnt_off000105b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B6 2080 bytes
SHA-256: 041fb338776cc2c4fdf02ef8dc738f2ca586166e2fdd6942bea705876f8091c4
font_02_sfnt_off00010f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7A 10956 bytes
SHA-256: dcc04c51c487f56b3a9637c1f7a561e4c8546b692878ec3212632f342e653b48

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