Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1ec15199e8d92a…

MALICIOUS

PDF

71.3 KB Created: 2020-12-25 01:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 7a6c5675fd0405f6cdc26d5a78b14783 SHA-1: 1cd72a4680fa3d13cf4a72c8f1404b275632b980 SHA-256: 0d1ec15199e8d92a3704f4d5860119464797b13d3d671966e872e03ae4312b27
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL that redirects to a dating site lure, likely intended for phishing. The PDF structure and embedded content suggest it's designed to exploit user curiosity or desire for online connections to lead them to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafficel.ru/strik?utm_term=free+usa+dating+site+2019 PDF link annotation
    • https://cdn.sqhk.co/larovejadeb/7ghgeib/lullaby_songs_for_infants.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2cb7738-e75d-4120-ad0b-315d0ebba8a8/lexem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b72ee7e5-8a52-456f-a072-8f61d54b2c1e/elsword_freyja_pve_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8531b33c-80c1-40b5-8a4c-ca031a5810c8/gidot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d1208a4-d7c8-4ede-8b54-7dcfead60624/demonstrative_pronouns_worksheets_wi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02342a3f-a07a-4c9e-bc4f-909579bf08a7/birorazim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e53d686-8718-46d7-be6f-aa50fb6f58b7/virs_program_indir_B.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad19bca-a7d8-4b34-8a6f-4b52c3d0d248/mcculloch_pro_mac_610_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0b95d2-65a1-47ea-8461-09b5b8f8b922/42056885198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a7029a-bcf6-4bf9-a8c3-fa5b681545f4/kizenaxarewe.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC06 5396 bytes
SHA-256: f3b47acd9fe9f894dadd1f4b5c300287610b99a57b4818dc522bcfb3c474d974
font_01_sfnt_off0000ee72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE72 10212 bytes
SHA-256: ab8295dbf23bd4267b3561aa89e020003ccb0ee7391eef4cb466a583becb6b7e

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