Malicious PDF — malware analysis report

Static analysis result for SHA-256 a199ac92add02da4…

MALICIOUS

PDF

70.7 KB Created: 2021-02-24 11:58:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 283ec3824c5d72fc38b9da56af6f0cf5 SHA-1: 67fb00a1b8eb292860d52d8c77ca48f1d7021645 SHA-256: a199ac92add02da46fedbcf55c514d206fadd03646ee35f03642c55ec6403e73
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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/wix?keyword=free+psn+gift+card+codes+no+survey PDF link annotation
    • https://mogivara.weebly.com/uploads/1/3/2/7/132712472/1550715.pdfIn PDF document text
    • http://managerprogram.live/577159958939sxnw.pdfIn PDF document text
    • https://lejujazu.weebly.com/uploads/1/3/5/3/135337057/1538705.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/call_of_cthulhu_7er4uxt.pdfIn PDF document text
    • http://fiwirumoded.22web.org/is_the_revenant_movie_based_on_a_true_story.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452609/normal_5fcf8163cd9f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450440/normal_6021ec368ce9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473053/normal_6025259a976d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390659/normal_603261e60ea16.pdfIn PDF document text
    • https://vibakifekapob.weebly.com/uploads/1/3/1/3/131398015/kanixogena_vebugasita_rosowovik.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/moxebebumigu-nulix-vatepibejevolef.pdfIn PDF document text
    • http://mazavunapefu.iblogger.org/angle_of_repose_of_soil.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bolunivagoxel.epizy.com/bacteria_gram_negative.pdfIn PDF document text
    • http://dipuxalukogi.rf.gd/printable_wedding_invitation_card_template.pdfIn PDF document text
    • http://voginafukut.rf.gd/exos_heroes_guide.pdfIn PDF document text
    • http://saxowuwu.rf.gd/57616802895.pdfIn PDF document text
    • http://ruguwozud.epizy.com/mupadifokimiwitisu.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_off0000d6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6D3 5408 bytes
SHA-256: e8c9b1f8b29ed05423b20d7e589f99bc7a15db992377783ea8d0e26fbbb150a5
font_01_sfnt_off0000e960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE960 10660 bytes
SHA-256: a30d5884f54c0396f874ac2715554c56d76207ee79bbb94742281e8e75fa5365