Malicious PDF — malware analysis report

Static analysis result for SHA-256 98a25f0724fe4eae…

MALICIOUS

PDF

67.2 KB Created: 2021-02-18 12:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7cadf415cbf8419b69456a8aba577644 SHA-1: a5e0e31189a7482524ffaa233683d8fc38e3d2dd SHA-256: 98a25f0724fe4eaecba2499e7c0730a7ceb26e45ba85dbc4a1d8e34a324b9c4b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://druttle.ru/wix?keyword=videos+para+reflexionar+cristianos PDF link annotation
    • https://kaxawoxo.weebly.com/uploads/1/3/1/0/131070710/regewitumenogo-tonuzebaxalozig-luwasizobun.pdfIn PDF document text
    • https://misadedami.weebly.com/uploads/1/3/3/9/133997414/mididu.pdfIn PDF document text
    • https://xazowivuxef.weebly.com/uploads/1/3/4/5/134513065/d3220f535b242.pdfIn PDF document text
    • http://reetodo.online/perfect_slice_mod_apk_revdl4pwm9.pdfIn PDF document text
    • https://lerelapukuvi.weebly.com/uploads/1/3/0/7/130740054/225d643cb4.pdfIn PDF document text
    • http://milanomodaitaly.site/quickbooks_2019_cheat_sheetfw99k.pdfIn PDF document text
    • https://mojivuza.weebly.com/uploads/1/3/0/7/130775228/e0b21204a.pdfIn PDF document text
    • http://appletopshop.ru/nccer_core_curriculum6feft.pdfIn PDF document text
    • https://kuxapularutamux.weebly.com/uploads/1/3/5/9/135984678/mozigefujeso.pdfIn PDF document text
    • https://mogeletonedilo.weebly.com/uploads/1/3/1/4/131482944/2b6f7fd1.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/figugipopar/is_kitchenaid_food_processor_good.pdfIn PDF document text
    • http://xadejozad.rf.gd/animetal_pegasus_fantasy.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/juxonemup.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/koxawinezebalefaxateron.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/logos_bible_software_for_mac.pdfIn PDF document text
    • http://lenegimuni.epizy.com/bhagavathi_movie_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/atopic_dermatitis_guidelines_aad.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/61522723974.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_off0000cbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAF 5180 bytes
SHA-256: 3e546e2350ce6f63806b7d6616a1897e3224ad28b2e794a57130373de2018ed8
font_01_sfnt_off0000dd68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD68 10124 bytes
SHA-256: 41c305fff7e33c8d7534945b79ba1d2df306390fbb454978b2d027da34dc6498

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