Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a04ef3134797ae4…

MALICIOUS

PDF

81.4 KB Created: 2021-03-06 05:31:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 30d5c86858f36628528c7f26f7e355fc SHA-1: 3ef18c7e5adba099b1b67de4cd4323298495a436 SHA-256: 5a04ef3134797ae43c286473832b03d0a529d77ecc113dd0f2a91e9675ab1cce
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/123?utm_term=call+me+by+your+name+script+etsy PDF link annotation
    • http://straponartist.com/34049231773avdwq.pdfIn PDF document text
    • http://btsworld.org/14_tablets_of_enki1h73e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5d3a3edc-1384-4eb0-a354-174dd54c13aa.filesusr.com/ugd/7f5dc5_20b309193b644341b8802eb7ce3df7d5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7b97cae-1fe2-47bd-8f88-abf6123df606/sidogojenexeful.pdfIn PDF document text
    • http://kovefevejafuk.epizy.com/6.7_powerstroke_transmission_fluid_change_capacity.pdfIn PDF document text
    • https://ee67c5b3-b4d3-4257-b425-af55881d3a68.filesusr.com/ugd/c60da7_a661c2c1e107422db75e3043721c5467.pdf?index=trueIn PDF document text
    • https://0e9c393c-9feb-4465-ae9d-4486bea7a644.filesusr.com/ugd/4b68be_c1763f1560e64d258a8b62d60118fcf3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/85d81a0d-35ee-4585-a438-9cdccdc11612/what_type_of_variable_is_shoe_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/107b28bb-7f5f-4dc3-b330-bbdc3fa4dd17/tesla_model_3_interior_white_or_black.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/102b532b-1f07-49b2-bba7-350f09ab9602/duwexafozagalara.pdfIn PDF document text
    • http://dusekamalebe.rf.gd/peavey_vypyr_15_manual.pdfIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_67e9ad7c8ef142cb8de5372816e80ed6.pdf?index=trueIn PDF document text
    • http://renaxederopuva.rf.gd/46000694108.pdfIn PDF document text
    • https://7afd96e6-4611-46d4-9b98-d111b897c281.filesusr.com/ugd/154221_ec0eb9c68dac43d983978954ff2a6c64.pdf?index=trueIn PDF document text
    • https://86f5e18a-8766-4ae7-b9bf-31430b627380.filesusr.com/ugd/911c12_14f69676083c466a8c8bfde65d224aec.pdf?index=trueIn PDF document text
    • https://50aad03f-9d2a-47e6-be13-abd12f321b17.filesusr.com/ugd/3fd638_5bc6b6bf31db4cc8b6e973280115ad73.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c75fb2a-db7f-4520-bbbc-d24e763c0e85/rowekoginudowenanin.pdfIn PDF document text
    • https://233b4d2f-9c44-4004-b776-098ebc281e6f.filesusr.com/ugd/7f980c_4304344f8b534fdca9bdb47ff39a145f.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_off000102a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A1 5228 bytes
SHA-256: a77c5ca2f3d7f94325146211ba273537196c74800b90cf46749aa7992ce898a9
font_01_sfnt_off00011455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11455 10688 bytes
SHA-256: 7184069619658f6dc7a4a258de0380d0da1bb4313e02ba692e5a5667242afa5d

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