Malicious PDF — malware analysis report

Static analysis result for SHA-256 9910b7729d548384…

MALICIOUS

PDF

71.0 KB Created: 2021-03-05 08:36:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 15fc6a661b1534d7bd860061ec233323 SHA-1: 4445d959685115a9892528426d111ac4a2b77e93 SHA-256: 9910b7729d548384e75b079fd5676ba0468cb5d1690e57755d5b780fcb472c46
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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://jacksth.ru/wix?keyword=best+50+amp+manual+transfer+switch PDF link annotation
    • http://rajukilodagoje.mygamesonline.org/64760908101.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_5fde4e6ccaf81.pdfIn PDF document text
    • http://aires.fun/puzavikijamorqvcs3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529087/normal_6028a46f907ec.pdfIn PDF document text
    • http://1xbets-reg.site/how_to_treat_severe_metabolic_acidosisv6ghc.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/1jhmJgf/97939243660.pdfIn PDF document text
    • https://cdn.sqhk.co/wofazexej/cjigdpj/22995798611.pdfIn PDF document text
    • https://cdn.sqhk.co/mekurapiw/ridv5hi/sacrifices_must_be_made_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/rjeie4W/t_rex_3._0_3d_printer.pdfIn PDF document text
    • http://medicalpracticementor.com/police_accident_report_torontosnkqg.pdfIn PDF document text
    • http://swiss-gear.shop/has_fitbit_flex_2_been_discontinued6bt3g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464542/normal_5fcd60a0bf98c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450883/normal_5ff15e6cab3a3.pdfIn PDF document text
    • http://zozamowewideno.mypressonline.com/calligraphy_cursive_letters_for_beginners.pdfIn PDF document text
    • http://islta.fun/jifudaluxarolopedhudoq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://937a8a2d-b41a-4163-aff8-eda6db263557.filesusr.com/ugd/21e6f2_013b049ae7db421c8668c9dec2df88a2.pdf?index=trueIn PDF document text
    • http://nafaradevofipaf.myartsonline.com/kikobububesuvusokek.pdfIn PDF document text
    • https://c580675e-8888-491d-8c80-3106eaac86fb.filesusr.com/ugd/c8a981_1dacdea9d11b444a96289ec08a3fd56a.pdf?index=trueIn PDF document text
    • https://237a2310-9536-43ad-add1-fe73b840a51a.filesusr.com/ugd/8b319d_5c13ca35f0ca4c87bd3dd142fcda4bd4.pdf?index=trueIn PDF document text
    • https://eaae50f7-3b1c-4f1b-9b3c-e2a48377569d.filesusr.com/ugd/b96e41_6421d6c23bf14a8692cb8746239221ec.pdf?index=trueIn PDF document text
    • https://367e539a-c541-4439-991c-4bf2bef2aa7a.filesusr.com/ugd/77d535_73940b94626b45c3ad1fde570c6fdfcf.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_off0000d4a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A8 5664 bytes
SHA-256: b5cf9dd33a23f6e9f4580592feaf722e589faba3d2b81e0ee9f5c032ba6e5acc
font_01_sfnt_off0000e7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D9 11668 bytes
SHA-256: 4f2983f0bbaffc68b20aa4c0e12f9e5e413e688d10b148fff8f6e471a6e3cd61

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