Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae62ad5e59b73b20…

MALICIOUS

PDF

90.8 KB Created: 2021-03-13 17:16:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: dc4a2239c07102f243b5c523c89c3613 SHA-1: 59ce6660e3b47b7bd5c147679556c99e93614152 SHA-256: ae62ad5e59b73b205dd7c389198fa6015dd8313e72ad0ab80c2358b56d3acfe1
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple URLs pointing to disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

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
  • 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://jacksth.ru/wix?keyword=space+marine+codex+7th+edition+pdf+download PDF link annotation
    • http://nafarami.medianewsonline.com/lidimeg.pdfIn PDF document text
    • http://meetraisins.club/burger_king_menu_with_picturespr1v8.pdfIn PDF document text
    • http://usacarins.com/how_much_oil_does_a_2012_honda_civic_takeu2ruq.pdfIn PDF document text
    • http://pufivuziviv.mypressonline.com/31612014064.pdfIn PDF document text
    • http://leledup.mypressonline.com/21429967879.pdfIn PDF document text
    • http://grenkasalo4.xyz/zombie_party_favor_ideas_for_13_year_olds4h11t.pdfIn PDF document text
    • http://storedubai.shop/windows_server_increase_remote_desktop_connectionsxwboz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fed4949e-3809-4fc0-a28b-84c5d390f589.filesusr.com/ugd/94482e_8336eda93f44477786c94a0b45058f30.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/84d28977-7776-4495-b53e-f46f02fa47cc/83478003212.pdfIn PDF document text
    • https://b46c4cda-4951-41c0-816f-bbf02eee4d9b.filesusr.com/ugd/4ff992_166722dcc4814792bfa968e5e979317d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/i_am_a_church_member_chapter_5_powerpoint.pdfIn PDF document text
    • https://40fd9d30-e691-4ad4-9ff9-7de67b304886.filesusr.com/ugd/45b27a_4981bae9dae1446aa39f47dbafa97eca.pdf?index=trueIn PDF document text
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_05983787a56346068b2af7c8e17df499.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/67019772634.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/is_percy_jackson_in_the_lost_hero_book.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/31766525067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90a08c1f-08ca-437a-ae2a-4e50897ddbb9/33754934213.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/dabuwanigitoga.pdfIn PDF document text
    • http://kogotiru.myartsonline.com/public_finance_management_act_2020_kenya.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_off00011db7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DB7 5560 bytes
SHA-256: 136003222ab337a41c2400c59b348f68a141ca75ade153a7dd363e1bf18315f3
font_01_sfnt_off00013098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13098 13748 bytes
SHA-256: c796932a492d6a266ff8ce6dce732d6955161a47f38dcaa5a5a335d912784196

Open this report in the interactive analyzer, or submit your own file for analysis.