Malicious PDF — malware analysis report

Static analysis result for SHA-256 989b9337ebb7e42c…

MALICIOUS

PDF

73.1 KB Created: 2021-02-25 07:45:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 42b5a8787d8ad7f5602363985b8e8dee SHA-1: 6e2a211df869ed365335daba8f99a2ee5b406ea4 SHA-256: 989b9337ebb7e42c21c2fb5489e74249e3d19dc434d7a20d4ee2d8d00000fe22
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=is+there+any+dog+groomers+open+near+me PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4474205/normal_5fecb77ac4c98.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/kunarebali.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500186/normal_602729fd54cba.pdfIn PDF document text
    • http://bitcoins-profits.com/33822600880605pl.pdfIn PDF document text
    • http://healthytrands.com/dogafela0077z.pdfIn PDF document text
    • https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/7215073.pdfIn PDF document text
    • https://xiwajuropoji.weebly.com/uploads/1/3/4/3/134371127/wogasijuzet_zeguzadusoguz_xilakanolufoto_sasana.pdfIn PDF document text
    • http://blue-tick-central.com/exercicios_resolvidos_trigonometria_no_triangulo_retangulo_9_anolyqmv.pdfIn PDF document text
    • http://trynutra.shop/verizon_5g_mifi_m1000_hotspot_manualrmbv8.pdfIn PDF document text
    • https://lefewaxenu.weebly.com/uploads/1/3/4/0/134012542/ferexujekaxewirod.pdfIn PDF document text
    • https://gaxezoxo.weebly.com/uploads/1/3/0/7/130776828/72d6e84cf3a805.pdfIn PDF document text
    • http://foyou.store/727365432834fxrc.pdfIn PDF document text
    • https://nakakikixug.weebly.com/uploads/1/3/4/4/134490848/tubuzexadof.pdfIn PDF document text
    • http://com-signto5.xyz/55885168294gwl34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452385/normal_6005b1d8121de.pdfIn PDF document text
    • https://xutafutixon.weebly.com/uploads/1/3/4/5/134576274/7085822.pdfIn PDF document text
    • https://kuzeloxowew.weebly.com/uploads/1/3/4/3/134330257/ribemiv-bapewawan.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368950/normal_5ffaeb61b9a64.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/auto_call_recording_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/18870740805.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/what_size_tires_are_on_a_2013_ford_focus.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E7 5380 bytes
SHA-256: 825998dfe8fa5ee2eee04d9dd87661f600a55c73deb516fd4c63ccf9d080054b
font_01_sfnt_off0000f312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF312 10576 bytes
SHA-256: 96caa98450da319bcf874bc5a70a7f4018703a731c1417c653ff5b04d838140d