Malicious PDF — malware analysis report

Static analysis result for SHA-256 c16186491ee4f9d7…

MALICIOUS

PDF

71.0 KB Created: 2021-03-04 08:38:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 27f372b26323917560b3f1d9af7e4486 SHA-1: 7edd7849a6bfc882557f33cc2beb8a724f747864 SHA-256: c16186491ee4f9d767dc85a946f9a474c62e0957c2cf26ddda5fe62ffe2de599
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://botokaw.ru/wix?keyword=exploring+zoology+a+laboratory+guide+answers PDF link annotation
    • https://cdn.sqhk.co/lukedivibeb/idcQhiM/regolazarikigewosawe.pdfIn PDF document text
    • https://nitikado.weebly.com/uploads/1/3/4/6/134660078/1381784.pdfIn PDF document text
    • http://lovelid.xyz/delta_bennington_4_in_1_crib_instructionsy1lgq.pdfIn PDF document text
    • http://justiciaforjustice.com/boninivugetixuvefebrosj.pdfIn PDF document text
    • https://guwepejesa.weebly.com/uploads/1/3/2/8/132814432/vamatokumuxar_fasofatupamen.pdfIn PDF document text
    • http://worldthailand.fun/lee_reloading_powder_dispenser1971v.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/hgkIY7N/i_am_a_warrior_lyrics_gospel.pdfIn PDF document text
    • http://tegor.xyz/fall_guys_gamem6her.pdfIn PDF document text
    • http://zupedaganivo.66ghz.com/drones_reporting_for_work.pdfIn PDF document text
    • https://fotovotujipibar.weebly.com/uploads/1/3/4/2/134267097/ffd2a051b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vidojizo.rf.gd/selune.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/chhota_bheem_video_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/sheet_music_for_primary_song_gethsemane.pdfIn PDF document text
    • http://gozudivigel.epizy.com/48612995848.pdfIn PDF document text
    • http://dixuzudes.epizy.com/lebepibinileruxusu.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_off0000d80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD80B 5536 bytes
SHA-256: 206f8d3f19fc7d89e9a07324e15ed0569608825fc499d5be53b61834bd7b057a
font_01_sfnt_off0000eb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB09 10388 bytes
SHA-256: 5f10fdb3f7232a3ceb5ccd64db93dbb83fbb95f859a0558f28addf6269a5b978