Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d8c303b7ea94afa…

MALICIOUS

PDF

64.2 KB Created: 2021-02-23 18:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 23624fc90aecacb3f7da11ceea807f75 SHA-1: 0d7fd2ad8ea80edcb846ac0f00b9011da67a70f6 SHA-256: 8d8c303b7ea94afa7fa3015c71a3a178ee49dd9b35ed9501f564a9e869ef937a
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://jacksth.ru/wb?keyword=can%20you%20go%20into%20cosmoprof%20without%20a%20license PDF link annotation
    • https://cdn.sqhk.co/zaletimerizo/JhiidOJ/46973898914.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/ieW3rhh/gosugotixokigegij.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/jnhaFgf/fasivuzokegegiw.pdfIn PDF document text
    • https://cdn.sqhk.co/botuvawezej/helBV3a/wafox.pdfIn PDF document text
    • https://cdn.sqhk.co/refevebux/ejiDVkL/cannon_master_mod_apk_android_1.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/xulepiwa/curriculum_vitae_europass.pdfIn PDF document text
    • http://fegozijagomon.rf.gd/mijorogixefogativ.pdfIn PDF document text
    • https://s3.amazonaws.com/tupofelasujewas/dyson_tp04_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pekatikisuruki/t_shirt_template_vector_red.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/24175480228.pdfIn PDF document text
    • http://xoxigibutu.epizy.com/pifubigedavopobidugopup.pdfIn PDF document text
    • http://kobaporosonunaw.rf.gd/sarah_plain_and_tall_movies_hallmark.pdfIn PDF document text
    • http://ferobinosu.epizy.com/94471380054.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/gegivupamepigokipu.pdfIn PDF document text
    • http://zobovobewuw.epizy.com/24810955502.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/veryfit_for_heart_rate_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/struts_2.pdfIn PDF document text
    • http://parorusoba.rf.gd/86799523516.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_off0000bdfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDFE 5528 bytes
SHA-256: 37f8226528515676dfc71a76360aaddf29ba3cea7b51a5087e61229de56e725a
font_01_sfnt_off0000d0b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B9 10220 bytes
SHA-256: a6368b7f037e9785fae1aec29960ed881efb25f5ef2e62e194e72f7819cd19d2