Malicious PDF — malware analysis report

Static analysis result for SHA-256 812f3e65b8e066c7…

MALICIOUS

PDF

66.7 KB Created: 2021-01-26 07:19:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 05dc83fd232a3e938e6ca82240376b2c SHA-1: f5952e469468d1a1a0388db099f69168c4c7c00a SHA-256: 812f3e65b8e066c7fc91f05e85440f6e476a4d636e8d9b33b96e8f3b7a0741ad
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://leonvi.ru/123?utm_term=longo+toyota+parts+phone+number PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469126/normal_5fdbcb68b34d4.pdfIn PDF document text
    • https://cdn.sqhk.co/zedazisem/dlgi3ia/dinid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422386/normal_5fd78d42df077.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/idsier7/98217804940.pdfIn PDF document text
    • http://sokinabunerir.iblogger.org/ebola_news_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470542/normal_5fdb90d65455c.pdfIn PDF document text
    • http://vududodudo.22web.org/agilent_multimeter_34401a_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/wRifOBg/sinimonizutavekarele.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/bh9QRbg/83631352472.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375700/normal_600562ad0dac7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ramejepazino.rf.gd/free_blank_guitar_tab_template.pdfIn PDF document text
    • http://jipinasin.epizy.com/water_pollution_with_images.pdfIn PDF document text
    • http://koxowasone.epizy.com/55114213588.pdfIn PDF document text
    • http://ritanuwo.epizy.com/51245667525.pdfIn PDF document text
    • http://rajamuviw.epizy.com/tribe_archipelago_lko_presets.pdfIn PDF document text
    • http://tobesonev.rf.gd/latitude_and_longitude_worksheets_high_school.pdfIn PDF document text
    • http://pesaforasipu.epizy.com/apache_poi_to_html.pdfIn PDF document text
    • http://sipariwemarisu.rf.gd/management_reporter_ax_2012_training.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_off0000c95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC95F 5384 bytes
SHA-256: aa18d458ef531ffa15b0eb71b3a2965741f33a881654d96a9cbf0d3a5864f5fb
font_01_sfnt_off0000db92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB92 10028 bytes
SHA-256: ffaa24faac0e0420b12cfa02b5c391d635132d680a637b7fdbfe5e9192eb87bb