Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad47575f51e09d1…

MALICIOUS

PDF

78.1 KB Created: 2021-03-19 05:03:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 74cc6e015e8e31211add1e4d8a5ec436 SHA-1: 3cf46ff34a4257c038a80af3bf5800f22b1bb257 SHA-256: cad47575f51e09d1cb83bf2d0c47081dc02890f0a74ef680a3146849c26ccc28
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=turboxs+manual+boost+controller+instructions PDF link annotation
    • http://likelid.xyz/game_horror_pacify_androidmtqir.pdfIn PDF document text
    • http://bibasawodugo.22web.org/44184979532.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/dugozajemededebesezurar.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/74853745438.pdfIn PDF document text
    • http://mitutepoka.medianewsonline.com/what_does_the_auld_lang_syne_mean.pdfIn PDF document text
    • https://jumifusat.weebly.com/uploads/1/3/4/6/134629025/salexosewofazefipu.pdfIn PDF document text
    • https://vobulesije.weebly.com/uploads/1/3/1/8/131857334/01c6d.pdfIn PDF document text
    • https://libodarupebixab.weebly.com/uploads/1/3/0/9/130969674/wepova-kawumajizoxenip.pdfIn PDF document text
    • http://miwodenexiz.iblogger.org/46631358267.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/fawixidetatdasdd.pdfIn PDF document text
    • http://zasazigupat.getenjoyment.net/apocrifos_del_antiguo_testamento_tomo_iv.pdfIn PDF document text
    • http://choosemadam.site/instagram_stories_online_iphonedh1x8.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/840f44cd4f7dc9.pdfIn PDF document text
    • http://kibiwoki.iblogger.org/giwuputitevozuvuzev.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/xuzed/depadimixo.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/18555409179.pdfIn PDF document text
    • http://nodikaduf.onlinewebshop.net/asrock_z170_pro4s_price.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/wibek.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/android_studio_proxy_authentication.pdfIn PDF document text
    • https://s3.amazonaws.com/degisapemifa/adding_rational_numbers_worksheet_answer_key.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_off0000f299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF299 5104 bytes
SHA-256: 626d8df6b7c4a9a6f2cea2cf0f2c77bccc567bef35690442819a539e02f183e4
font_01_sfnt_off000103d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D9 11540 bytes
SHA-256: 2c610a6c2f35839e2d1ea6c0a5e2d0334f32bd08b116984fd50e53003674f156

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