Malicious PDF — malware analysis report

Static analysis result for SHA-256 847545a14f38a0b2…

MALICIOUS

PDF

68.0 KB Created: 2021-03-06 05:38:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 7f270f37453f694378881a72d78f2b36 SHA-1: fa233eb524bb3d5a35e0091e6e28b7736a01c5d3 SHA-256: 847545a14f38a0b2157141731b4f935c844aba5b43faf20cc860a677474c5c6f
136 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
  • 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://maypoin.ru/wix?keyword=city+of+ember+chapter+4+questions+and+answers PDF link annotation
    • https://cdn.sqhk.co/xifobariw/aHLjilN/pico_rivera_california_news.pdfIn PDF document text
    • https://cdn.sqhk.co/loxinesupiva/cWifijV/49600157862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390366/normal_601286fa2501f.pdfIn PDF document text
    • https://cdn.sqhk.co/pedidagow/igpZjaW/knightscope_stock_forecast.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478927/normal_5fe9fde495811.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401517/normal_5fe4010c5ccca.pdfIn PDF document text
    • http://duwudivusupo.mygamesonline.org/cloud_computing_advantages_and_disadvantages_wikipedia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427809/normal_6042d6f34d02a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368746/normal_5fcd51d68c16d.pdfIn PDF document text
    • https://cdn.sqhk.co/reteduze/ccPDjjP/stickman_shooter_unblocked.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xijewixevav.onlinewebshop.net/does_thyroid_medication_affect_mood.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c288aac7-1b36-4584-86b8-9c565259fc5a/silver_eyes_graphic_novel_read_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/633a90fc-0337-4959-8907-3b823160d7b9/29397972256.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad11208b-392c-44eb-94ea-d3ced7cdc057/does_mind_power_work_solo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b45bf809-6723-40df-9db4-347f323085ae/34686514895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e67f128-bf41-4bdc-8e7a-3c292c24444e/sidar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f74f27b-ecd3-4450-a73a-e7d2802316fc/19617602888.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_off0000cd52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD52 5816 bytes
SHA-256: d9531f71df13792841f75ffc329dfd4acd65bffbdebf7a78fd40a32ad5d62a72
font_01_sfnt_off0000e10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE10A 10012 bytes
SHA-256: f0cfcd600cef2125f212c99c20ceb26dc210f168ed4ddc894f02210ab9d6e911