Malicious PDF — malware analysis report

Static analysis result for SHA-256 92aec874d80ccfa1…

MALICIOUS

PDF

75.3 KB Created: 2021-03-15 04:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6603ff24c11017edae4f060c01750cae SHA-1: d4eb547815e1aea62bf8f275f13c0be57d77ac06 SHA-256: 92aec874d80ccfa10b9a782d148464de3546a45f643a10a348c70bd7a94c86f4
136 Risk Score

Malware Insights

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

The PDF file contains a high-confidence ML detection and ClamAV signature for phishing. It includes an external URI and a redirector link disguised as a free download for academic materials, specifically 'thomas calculus early transcendentals 12th edition solutions pdf'. This indicates a social engineering tactic to trick users into visiting a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/wix?keyword=thomas+calculus+early+transcendentals+12th+edition+solutions+pdf PDF link annotation
    • https://gabejopow.weebly.com/uploads/1/3/4/5/134597712/padudatularadaviz.pdfIn PDF document text
    • http://wogigafulokeme.22web.org/wobixivufanabawi.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/zasinakutevezazukiz.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/busefat.pdfIn PDF document text
    • http://fikepoj.22web.org/korean_reading_book_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/sademekifelobaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402711/normal_5fc8eb689b468.pdfIn PDF document text
    • http://gazozasi.scienceontheweb.net/malipan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418570/normal_5fd34f81b6911.pdfIn PDF document text
    • https://pumaxodevuk.weebly.com/uploads/1/3/1/8/131872084/zupudotedupaziveje.pdfIn PDF document text
    • https://sobexezawatu.weebly.com/uploads/1/3/4/9/134903145/pofifalirolupa-zorofebe-dopasijazodapow-topisu.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/captain_marvel_wallpaper_for_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368758/normal_5fd89ea2b4da9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417405/normal_5fe57ba788ae2.pdfIn PDF document text
    • http://sewowenokep.iblogger.org/sleeping_songs_in_tamil.pdfIn PDF document text
    • https://xuxixoxeniti.weebly.com/uploads/1/3/4/5/134585484/247b981c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444646/normal_600cab0c243fe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/was_it_all_a_dream_lyrics.pdfIn PDF document text
    • http://pajuxiral.rf.gd/girlfriend_by_bukunmi_oluwasina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac78e080-823e-4993-a0ee-1859bbcfbd01/31457461228.pdfIn PDF document text
    • http://zokosinetipaw.rf.gd/how_much_is_dish_network_internet_per_month.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6064d25-faaa-4347-b679-6b23330c068c/the_language_of_composition_3rd_edition_teachers_edition.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_off0000e51d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE51D 5628 bytes
SHA-256: e5af253c25cefc994bcc667025f6185e0e50f7417772b26d525f7956ebd6e9fc
font_01_sfnt_off0000f81d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF81D 11472 bytes
SHA-256: 861c914d4dfa859439a8c04b089f8a21b6d6a81d859f2ef214722aa81245aca7