Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb857c62044f3ea7…

MALICIOUS

PDF

72.9 KB Created: 2021-03-06 09:06:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7b6d1461c716d24b6cb7b5c8abcba9c5 SHA-1: cb38c114b599f2181c860ded3d12f6d867269e12 SHA-256: bb857c62044f3ea7b0ec1c618246e18dfcd6041fb7feec7a6076acbbf39fe283
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 5

  • 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://druttle.ru/award?keyword=2017+dodge+ram+1500+aftermarket+parts PDF link annotation
    • http://islemleriniz.org/27393889101me92k.pdfIn PDF document text
    • https://gekafokolasiga.weebly.com/uploads/1/3/1/3/131384301/4568606.pdfIn PDF document text
    • http://koponegigat.medianewsonline.com/36624334483.pdfIn PDF document text
    • https://digokevun.weebly.com/uploads/1/3/4/7/134747151/fuzoxasekem_kotodufor_ronum.pdfIn PDF document text
    • https://mazogerivajusem.weebly.com/uploads/1/3/4/3/134341978/liwis-wijux-zotapekob.pdfIn PDF document text
    • https://fugebigejajifad.weebly.com/uploads/1/3/1/4/131406613/dubukagi-tuzen.pdfIn PDF document text
    • https://rigegafotu.weebly.com/uploads/1/3/0/7/130740045/8411ca0792.pdfIn PDF document text
    • https://rumuzejisu.weebly.com/uploads/1/3/5/3/135349165/5676198.pdfIn PDF document text
    • http://bebetadiruj.mywebcommunity.org/how_to_update_vizio_e32-c1.pdfIn PDF document text
    • https://gidafefutor.weebly.com/uploads/1/3/4/0/134040883/42868392bcf2c73.pdfIn PDF document text
    • http://ziwigosopijulal.mygamesonline.org/does_my_honda_civic_have_a_recall.pdfIn PDF document text
    • https://bewebisiseten.weebly.com/uploads/1/3/0/8/130874130/0f841d8ea.pdfIn PDF document text
    • http://albatros-trans.ru/donogefapesih7yom.pdfIn PDF document text
    • https://viwutexotopuj.weebly.com/uploads/1/3/4/5/134522905/06a1f4b03bfa28.pdfIn PDF document text
    • https://kupelaranix.weebly.com/uploads/1/3/4/7/134729830/7112936.pdfIn PDF document text
    • https://fepobewute.weebly.com/uploads/1/3/5/3/135386667/3a7c8120c.pdfIn PDF document text
    • https://wosabizovores.weebly.com/uploads/1/3/4/5/134577485/xugetefipiwe_votijodejuf_lemotivadifa.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://girofili.myartsonline.com/lowixenevubasupinikadi.pdfIn PDF document text
    • http://limoxukuk.atwebpages.com/rivesumulometidotitej.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/e_c_h_s_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/85497881585.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/elder_scrolls_cookbook_mead.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/jamovaxapibujikulerage.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/has_angel_has_fallen_been_released.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_off0000d2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C9 5460 bytes
SHA-256: 325e499095496461403036053ffda2b6bef12717ea89c4a60c191898c364735d
font_01_sfnt_off0000e56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE56B 10068 bytes
SHA-256: c9f87b341e61450a34f892c961516c6db300f083ec9f72642fa459992dfb2c5e
font_02_sfnt_off000107dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107DC 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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