Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fbaa319ea73f88…

MALICIOUS

PDF

71.6 KB Created: 2021-02-23 21:37:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 781a24c7e1d7f2fc12a9aa7c4c2e6350 SHA-1: 56b66f96651d71618b23b1fc49581744ce1fbf53 SHA-256: 15fbaa319ea73f882b380263f529dd44ad3aa2cbb19ef70f30c7e590750361a3
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=bakery+business+plan+pdf+in+marathi PDF link annotation
    • http://vekvelo.ru/dungeon_defenders_2_stats_guidemtb76.pdfIn PDF document text
    • http://ygrash.website/46976521590v53t4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464297/normal_5fcb5a06a4421.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392220/normal_5ff3148f78689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447093/normal_6023f2903ab7f.pdfIn PDF document text
    • http://emmetrix.net/45833862672fkn1m.pdfIn PDF document text
    • http://dutov.org/guide_dogs_for_the_blind_charity_donationsgcgdh.pdfIn PDF document text
    • http://vir-tus.com/ansel_adams_wilderness_trail_map8l56y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447108/normal_600d221da4f13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426697/normal_5ffe49752480f.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://depebovibu.epizy.com/sarcasm_get_scared_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/lodezedodozujijuwuverale.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/3ds_emulator_2019.pdfIn PDF document text
    • http://degivenumi.epizy.com/93485909193.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/nibukubekesefa.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/broadview_security_keypad_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/sudiwikok.pdfIn PDF document text
    • http://jipowefata.epizy.com/sajixoxowezutedej.pdfIn PDF document text
    • http://vejesigivilowen.rf.gd/xasopikipefen.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_off0000ce0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE0B 5408 bytes
SHA-256: f6dfd0b8e85733ea91fa5c90a7ea1c5606c749fd220984b08944fc61c18bab6f
font_01_sfnt_off0000e03c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE03C 10152 bytes
SHA-256: 9618b74f7f0a9609a00f5fec4f216eddcb303bdd0a2331cf266200d2ea2f40bd
font_02_sfnt_off00010306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10306 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2