Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0280d202e8f18f…

MALICIOUS

PDF

66.9 KB Created: 2021-02-24 08:58:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a95734a926d484796bebf41f076b69c9 SHA-1: 880199a0090a95437e204b21a9c988dbc8049ebd SHA-256: 3d0280d202e8f18f81506c362b9b168a2eba274a776b9c6779b92f935196214e
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://baarspo.ru/wix?keyword=land+and+water+pollution+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/wovenebi/qOhiif9/vosena.pdfIn PDF document text
    • https://cdn.sqhk.co/surodamiz/gg8FWTw/javeza.pdfIn PDF document text
    • http://reduslim-siteofficial.site/blackstar_20_v2_review2n9f5.pdfIn PDF document text
    • https://cdn.sqhk.co/metevetufi/b5A9tNG/censor_beep_sound_effect_long.pdfIn PDF document text
    • https://fikadodovawewa.weebly.com/uploads/1/3/4/3/134320255/321eb.pdfIn PDF document text
    • https://sonujeti.weebly.com/uploads/1/3/0/9/130969686/7422193.pdfIn PDF document text
    • http://merishwheelrecords.com/kenwood_stereo_deck_says_protecto585o.pdfIn PDF document text
    • http://pycnidwzxc.info/writing_samples_for_middle_school_students22e7u.pdfIn PDF document text
    • https://cdn.sqhk.co/javepuju/iiAjbhh/30_day_home_workout.pdfIn PDF document text
    • https://wewowalowumuv.weebly.com/uploads/1/3/4/0/134040384/2368543.pdfIn PDF document text
    • https://cdn.sqhk.co/lolatonuvesa/pxE1hgF/happy_jumping_spider_video.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/jhMjgzm/novakos.pdfIn PDF document text
    • http://housefashion.ru/rifijetusasafimp5dl.pdfIn PDF document text
    • http://rudikonutabo.22web.org/pezimemidenokakadupu.pdfIn PDF document text
    • https://cdn.sqhk.co/gemadaruvow/gju2kjf/small_pocket_knife_display_case.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wezikadedikenev.epizy.com/dwarf_fortress_download_lazy_newb_pack.pdfIn PDF document text
    • http://lugavatakavupo.rf.gd/walabeleronanusijub.pdfIn PDF document text
    • http://moferamobonar.epizy.com/diwubopokufeputikive.pdfIn PDF document text
    • http://jisiwolug.rf.gd/mirro_pressure_canner_parts_canada.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_off0000c9d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D0 5144 bytes
SHA-256: 5a26714af77359ee7edcb1f991a80a7fe8da019c0c762b03a767cc5c69398764
font_01_sfnt_off0000db5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5C 10264 bytes
SHA-256: c2d106d1e70d3f33debf0e0cbaf3cbc91f4a129f77c23dd80d4e74685e0f6e0b