Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ae2b4bdcbb8172…

MALICIOUS

PDF

78.8 KB Created: 2021-01-26 10:46:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 94ceaac8280d7dcac03e9556da97f68e SHA-1: 4d8dc6722157c2b5d5bd728620a9b08a89534f05 SHA-256: 22ae2b4bdcbb8172479ade12a3dae4b989778a13ab0dbe39e3ffd4406ec46eec
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wb?keyword=road%20trip%20snacks%20for%20kids PDF link annotation
    • http://masonufidowex.iblogger.org/50042064818.pdfIn PDF document text
    • https://cdn.sqhk.co/zapajugadira/jpkghji/68394887348.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426815/normal_600fcceee5e4c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489058/normal_5fceb79cb2864.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491445/normal_5fce3742deecd.pdfIn PDF document text
    • https://cdn.sqhk.co/patagarinixa/ij5giJz/csr_classics_download.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/NjhiRge/street_fighter_v_rage_quit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382414/normal_5fdd7a6991933.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380210/normal_5fdf595fc80cb.pdfIn PDF document text
    • https://cdn.sqhk.co/kekoseni/ibVkGzo/speed_racing_ultimate_4_mod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454966/normal_60010afb8cefb.pdfIn PDF document text
    • https://cdn.sqhk.co/dawajimet/PhjUji0/larabu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475559/normal_600578b7bbf4c.pdfIn PDF document text
    • https://cdn.sqhk.co/bovokolel/WOOAa5Z/flip_a_coin.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/icjdii4/secondary_school_teacher_application_letter_sample.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuxojawe.epizy.com/gezamovifemefeme.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/87254481488.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/koxipefono.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_off0000f782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF782 5188 bytes
SHA-256: 0fcc1597a5fd059767c3c7c370470932a7916b068dea03ab8b619410ecf46720
font_01_sfnt_off00010943.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10943 11152 bytes
SHA-256: a81a94d623dd46118010f2c648a1791d3384a10051c3c6d07391dd66bb46c71e