Malicious PDF — malware analysis report

Static analysis result for SHA-256 74330d318fd824e5…

MALICIOUS

PDF

107.6 KB Created: 2021-06-09 18:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: e87ceedbc4fd5d278437bd6958234060 SHA-1: 3ca9d7a38ddca0c929e2163ea583ef11b65034cf SHA-256: 74330d318fd824e56791e835cf30d429d3f704590605f94a7d408239de77472d
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm designed to drive traffic to potentially malicious sites. The presence of a UTM parameter in one of the URLs indicates an attempt to track user engagement with the lure content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9962

Heuristics 6

  • 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.
  • 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://pixomot.ru/pbw?utm_term=123movies+mardaani+2 PDF link annotation
    • https://lenudigibelap.weebly.com/uploads/1/3/7/4/137499492/rutipakuwisopu.pdfIn PDF document text
    • https://rumirasikimuzib.weebly.com/uploads/1/3/2/7/132710795/musetol_sasukogoluzutu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413226/normal_604a8475b2b48.pdfIn PDF document text
    • https://pujuxapalijened.weebly.com/uploads/1/3/6/0/136009243/tajilawitut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446400/normal_5fe61e4188e77.pdfIn PDF document text
    • https://pezofonarumupub.weebly.com/uploads/1/3/5/3/135396673/5022677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484815/normal_6028ae4ed59d2.pdfIn PDF document text
    • https://fawewetipe.weebly.com/uploads/1/3/1/3/131379545/litorewatefe.pdfIn PDF document text
    • https://jilazokezabise.weebly.com/uploads/1/3/5/2/135296918/3835649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413835/normal_602c03d27cfda.pdfIn PDF document text
    • https://gijagexerifaru.weebly.com/uploads/1/3/5/3/135322880/cc7698c1739.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427095/normal_60beef7bb4879.pdfIn PDF document text
    • https://jezelide.weebly.com/uploads/1/3/0/8/130874318/4012750.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/19387c34-c1e4-42a8-82f3-f7d954c91d00/ngk_bujias_catalogo_motos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6bc3814-432c-4e06-9051-23ea0ce750d6/lufuvij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdc2bcd4-2ff7-4d14-9cc5-344979298881/how_to_start_music_lesson_business.pdfIn PDF document text
    • http://gipomebepate.pbworks.com/w/file/fetch/144475296/sample_size_calculator_online_prevalence.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70abdaf2-99e4-4ad9-8ee8-c5aaa11895de/tmnt_2007_game_all_bosses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b17ab974-7b33-4c07-9ec7-72e3c165a6a3/how_to_prepare_student_visa_file_for_canada.pdfIn PDF document text
    • http://vamafob.pbworks.com/f/how_to_enter_asphalt_9_cheat_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3591a312-f2cd-49e0-9931-c89256f8055c/buffalo_wild_wings_nutrition_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59fd6210-106c-4d6f-844e-98a372382095/briggs_and_stratton_ignition_coil_wiring.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03ad13e5-e5de-4e6a-ad92-25da2456f4fe/como_hacer_un_archivo_zip_en_celular.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4401b7a-0de0-4d49-8efe-d06e11c2bece/lufemoxelafidavagum.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F2F 4960 bytes
SHA-256: 00b635b2ca4bb8961d9b57ac971282bb8309d3d4e2027a90cf53ff537b1b1b41
font_01_sfnt_off00011fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD7 5708 bytes
SHA-256: 93c6a1435da979c724fb8f9276a8451e5c2d1a0c4d984642c8ec54eaf70a2569
font_02_sfnt_off0001347e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1347E 11888 bytes
SHA-256: da9b343f3e678b87b81558bd51cd167c22cdee90afafce14abe5300b06faf817
font_03_sfnt_off00015d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D49 18392 bytes
SHA-256: b98b5d0d8ff8044ca90a172c54efb3ef677446de8b40ab194847ba4155695046
font_04_sfnt_off00017742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17742 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
font_05_sfnt_off00018542.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18542 7712 bytes
SHA-256: da74561a68c29a0f5db96b7352ec6d6ddf9c2147d8b17510fc7d715b005537cc

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