Malicious PDF — malware analysis report

Static analysis result for SHA-256 92b22e54f8a83427…

MALICIOUS

PDF

63.0 KB Created: 2021-02-27 06:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 70aeac9b399ed126589a07726ab73f02 SHA-1: 750e2fb101d99a14be2777ad574a526fdc26ebd9 SHA-256: 92b22e54f8a83427575b5e00ac221832fb3d6dce22222f9294472f334e7f4318
134 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_UTM_REDIRECTOR_LINK heuristics. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, suggests a lure related to workplace conflict, which is then used to disguise the malicious redirector. No scripts were extracted, but the primary attack vector appears to be directing the user to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/123?utm_term=how+to+deal+with+team+conflict+in+the+workplace In PDF document text
    • http://wide-take.top/4568709090510la7.pdfIn PDF document text
    • https://cdn.sqhk.co/norowitidot/xKheMhe/dragon_wallpaper_hd_for_laptop.pdfIn PDF document text
    • https://cdn.sqhk.co/gozolijitow/geIhZgi/72757775467.pdfIn PDF document text
    • https://cdn.sqhk.co/judixixelof/bibjhR0/rare_exports_streaming_english.pdfIn PDF document text
    • https://cdn.sqhk.co/vewimidipiv/2ghZjhH/vowonasuxufuvimar.pdfIn PDF document text
    • https://cdn.sqhk.co/tokofape/jcaDijn/22467070419.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/luborinizu/jabipumefenato.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/acura_rsx_2006_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/71832948001.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/best_games_with_friends_android.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/belabi.pdfIn PDF document text
    • http://sidepojedava.myartsonline.com/the_penguin_history_of_latin_america_chapter_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/tesco_plc_shareholder_information.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/minecraft_free_1._14.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/business_information_systems_degree_reviews.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 3

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_off0000bcbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCBB 5332 bytes
SHA-256: b298d84236adab58fe42446d74631008110af0e7d7a82200c1d8cb6b5cdd6933
font_01_sfnt_off0000cec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC2 9400 bytes
SHA-256: 7120d01e0ea67694acd126873bf587f0906f2cfdaa5bd665203e4cbc114f587f

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