Malicious PDF — malware analysis report

Static analysis result for SHA-256 19982b8f8f947816…

MALICIOUS

PDF

67.4 KB Created: 2021-02-15 17:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b5b803a8c4f9127789abad90e99f10e8 SHA-1: a00f4fd326dda040eccc1b7354b2d6e9aafec602 SHA-256: 19982b8f8f94781637747b73ffa1fdacd7ea1032cebe4cb7d905ebb4bd717431
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=fisher+price+snugabunny+swing+troubleshooting PDF link annotation
    • https://nowefatitabawev.weebly.com/uploads/1/3/2/7/132740181/gapeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455890/normal_6029708d7b0d3.pdfIn PDF document text
    • http://hookup157.site/possessivpronomen_bungen_englis7r3wa.pdfIn PDF document text
    • http://senenetikoxikom.22web.org/hippocampal_formation_synaptic_plasticity.pdfIn PDF document text
    • http://znakomstva18x.site/subifogajofofujinifolo7ol0q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505096/normal_6010de513d8e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404105/normal_5fd8da00c00e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489740/normal_601d5035e07e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456699/normal_6016fa19b949f.pdfIn PDF document text
    • https://pibusabet.weebly.com/uploads/1/3/4/6/134695111/6d972c7a147.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/wupagivoz/55883613204.pdfIn PDF document text
    • http://keximidurowu.rf.gd/16851741424.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/barowufatonutodutemeboj.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/luzuziw.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/best_fps_android_games_offline.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_off0000c905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC905 5484 bytes
SHA-256: ce516bc30c40d2d2bf849afb5d745f5adb1ae8a7ab8c78dc5ee1cb17b59e5b75
font_01_sfnt_off0000dbbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBE 10796 bytes
SHA-256: fef689783651627986499fe946c38d9e5d9b05694a0bb3486469e2adfd5f6473