Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48c562d17196395…

MALICIOUS

PDF

75.7 KB Created: 2021-02-27 04:35:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0e1842d0270ec61a878b180f6791dad1 SHA-1: 66b76483433cecfbe4e6457fb2c7200512f3fca8 SHA-256: e48c562d17196395df34e25424620062c8ce22973015fa71e953c0aee85d126a
136 Risk Score

Malware Insights

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

The PDF file contains an embedded link disguised as a parts diagram, which is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect the user to a malicious site, likely to download a second-stage payload.

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
  • 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://resalured.ru/123?utm_term=toro+wheel+horse+312-8+parts+diagram PDF link annotation
    • http://ita-bio.space/what_is_the_alpha_bravo_charlie_alphabetkplt9.pdfIn PDF document text
    • https://famojiwogupoj.weebly.com/uploads/1/3/2/3/132303340/tilanasufexog-kujebakezo-firadanuzabe-jokobeziwexo.pdfIn PDF document text
    • https://cdn.sqhk.co/pawekenu/fhcHB87/luvibakofo.pdfIn PDF document text
    • https://zibekasosux.weebly.com/uploads/1/3/4/0/134040395/2b1e1db3d.pdfIn PDF document text
    • https://janafapaxe.weebly.com/uploads/1/3/1/6/131606835/463833.pdfIn PDF document text
    • https://mosofekux.weebly.com/uploads/1/3/1/4/131437457/97a1fd.pdfIn PDF document text
    • http://nekuwagibajese.getenjoyment.net/80085771292.pdfIn PDF document text
    • http://slamelina.website/fajexudomisibibetvyhu.pdfIn PDF document text
    • http://expressvpn.store/bejeweled_blitz_free_download_full_gamecxvrn.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/nitatotol/70719376160.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/an_atlas_of_anatomy_for_artists.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/wamisezij.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/spotify_online_mode_android.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/83587752046.pdfIn PDF document text
    • http://bekelogamaju.rf.gd/dewalt_carpentry_and_framing_complete_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/i_would_like_to_meet_you_formal.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_off0000e9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BA 5988 bytes
SHA-256: e2ada10a3cd703f56ed25759fd9d83b5db708751c99f6e0edd86a82869b5e33f
font_01_sfnt_off0000fe0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0D 10396 bytes
SHA-256: eca24468b77d7c8ec42200af54e2c3f6252d54082404100bd55d3a7f9df0776d

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