Malicious PDF — malware analysis report

Static analysis result for SHA-256 aac79919952ceff5…

MALICIOUS

PDF

76.6 KB Created: 2021-02-20 22:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 375cffc95a875ed2f983bd5160185cac SHA-1: 15dfb8db66062cff05fce4f0f6cfa58af5ef4ebd SHA-256: aac79919952ceff52ce6788709a64c10dab07976c247b6f48d5e301a828d43f5
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://seumenha.ru/wb?keyword=attack%20on%20titan%20season%204%20episode%20release%20date%20list PDF link annotation
    • https://padixegidenu.weebly.com/uploads/1/3/1/1/131164435/fizokogem.pdfIn PDF document text
    • http://cetapp.xyz/faruvinonotisijegisaguxjcfs9.pdfIn PDF document text
    • http://livecopyrightverification.com/fnaf_1_apk_mod_unlimited_powerv34og.pdfIn PDF document text
    • https://wigewowatabosaz.weebly.com/uploads/1/3/4/3/134352056/dirolemewosufepuju.pdfIn PDF document text
    • http://hook-up.fun/79397020679js0w3.pdfIn PDF document text
    • https://nevedaroxizewav.weebly.com/uploads/1/3/4/5/134592578/jamazejiwojixep-dizag-niselaparowusam-zalilubedesuk.pdfIn PDF document text
    • https://pesenulowujef.weebly.com/uploads/1/3/5/3/135325158/424f55ad.pdfIn PDF document text
    • http://gobegoxox.22web.org/64123788404.pdfIn PDF document text
    • http://segway-wheelchair.ru/59291947579e4ro0.pdfIn PDF document text
    • https://fabuduviwanor.weebly.com/uploads/1/3/4/7/134739750/c59ae.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/rogugagatuf/febagijajixi.pdfIn PDF document text
    • http://viwefar.rf.gd/99375730049.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/android_sdk_manager_command_line_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/bagisi/talomunilitusunowusiwonu.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/20777596733.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/pipajakexinamalavesebodav.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/54851099363.pdfIn PDF document text
    • http://losamipivoku.epizy.com/wolfram_mathematica_8_keygen_free.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_off0000ec39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC39 5208 bytes
SHA-256: e04b4959b85fd4abf8c52b16a299a07282f50894de69e9fd4ef76d9c8bc8ff47
font_01_sfnt_off0000fe06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE06 11384 bytes
SHA-256: 7c4834b9863358c1fdc5b9f6597375fdd4943c51d2c1bf4011b126ccb3e5f9d7

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