Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd2d9ac79d8cdb8b…

MALICIOUS

PDF

88.1 KB Created: 2021-02-14 00:17:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 97ad57fc5d3261163e66abfd839e9c72 SHA-1: e2e28f3603be679c15a0fb1a4b8f8acb8fa8a763 SHA-256: dd2d9ac79d8cdb8bc9f5a58886f70a48f562a2810fefba33cccfaa5d6852d71a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a high-severity heuristic indicating it's an SEO redirector link, likely for phishing. The embedded URL `https://leonvi.ru/wix?keyword=jack+frost+x+reader+lemon` is the primary indicator of this malicious redirection. ML classification and ClamAV detection further confirm its malicious nature, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/wix?keyword=jack+frost+x+reader+lemon PDF link annotation
    • https://s3.amazonaws.com/satulibaren/lake_ontario_bass_fishing_guides.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/HieXPiW/912574186.pdfIn PDF document text
    • https://cdn.sqhk.co/lojulifuvuxu/iegihcw/international_facetime_calls_t_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/missguided_christina_aguilera_costume.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/34406362564.pdfIn PDF document text
    • https://cdn.sqhk.co/lagazowasobo/qc6jhhj/dragonvale_epic_dragons_past_level_10.pdfIn PDF document text
    • https://cdn.sqhk.co/posogamumut/giZsZlf/boxing_star_apk_mod_2._1._3.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/32763764915.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/documentary_heaven_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/font_bonbon_bold.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/aa_flight_587_ntsb_report.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/14454164434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366354/normal_600eb1973d12b.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/risolavawunu.pdfIn PDF document text
    • https://cdn.sqhk.co/vixuwegijelo/3AidgfY/pubagirilopoli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 4

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001076f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1076F 5288 bytes
SHA-256: 04ef06a488bd50ee31ead17232820011f898291e03727ab7b086770417846f21
font_01_sfnt_off00011962.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11962 10116 bytes
SHA-256: 5d3f36100507769efbe967e1268c74d8cad947222f1ee5758a8873e6b9ffd4ec
font_02_sfnt_off00013c2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C2F 16564 bytes
SHA-256: de3f177a729980414c1bf9d278c4d5e2a5f7c7ebdf815549b706333ce35ad2b9

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