Malicious PDF — malware analysis report

Static analysis result for SHA-256 6887c1d21e04d32c…

MALICIOUS

PDF

111.1 KB Created: 2021-04-06 23:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: acfac9e133997ef8a782f9d61813d04d SHA-1: e5680f6d0c7a43c147551e6808ffc0b8adf833c7 SHA-256: 6887c1d21e04d32cb3c211e6bf4e31fad3e1deb5d6fd32cd5f5f6d93ff3b090d
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm by heuristics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://midufefew.ru/wix?keyword=vase+stands+iron PDF link annotation
    • http://copyrightshelpcenter.com/hashtags_for_music_promotionszo9h.pdfIn PDF document text
    • http://mon-cmso.best/rapafubefironupogb12.pdfIn PDF document text
    • http://ndfnasg.xyz/7224373692p7r3g.pdfIn PDF document text
    • http://xigakusaruwu.iblogger.org/60461513033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_6042c6961132d.pdfIn PDF document text
    • https://rutuwupu.weebly.com/uploads/1/3/1/3/131378820/92965ac9.pdfIn PDF document text
    • http://maska-respirator.com/kerori2al8l.pdfIn PDF document text
    • https://mejidoxele.weebly.com/uploads/1/3/4/3/134320803/a6b80bdc.pdfIn PDF document text
    • http://btsworld.org/33879100009tpnm7.pdfIn PDF document text
    • http://bit7.top/platform_picture_ka_gana_do8lk1l.pdfIn PDF document text
    • https://wuzetawitowozuz.weebly.com/uploads/1/3/1/3/131381497/3cc2c6cc0.pdfIn PDF document text
    • http://naderuromopuru.22web.org/twitter_app_free_for_windows_10.pdfIn PDF document text
    • http://migerov.xyz/516893609731frek.pdfIn PDF document text
    • http://0fruits.space/bonds_baby_size_guide_australiailf6w.pdfIn PDF document text
    • http://nazhivy.net/avaya_2420_headsetk4osa.pdfIn PDF document text
    • http://hesap-al-sat.com/punezusimevisolupividww.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384484/normal_6027744b01f8d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://saligirij.rf.gd/89261266763.pdfIn PDF document text
    • http://fuvogixerad.epizy.com/answer_phone_incoming_calls.pdfIn PDF document text
    • http://lorenivi.rf.gd/exemple_de_cahier_des_charges.pdfIn PDF document text
    • http://tunajuxogililog.epizy.com/25165423861.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001449b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1449B 2912 bytes
SHA-256: b3177c8de935bf2e05ba58035bb430970af2c83108b60a2dfb12b0772094c699
font_01_sfnt_off00014ef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EF6 4540 bytes
SHA-256: fbf4bd2e975d48570ec382130a821fe3c059cc5057e0dfccc13d67c061076bbe
font_02_sfnt_off00015e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15E5D 12920 bytes
SHA-256: 49c232afab32317fd4a86622530b1dd7d1877d0c408f9dfcdbc1818e01db7fa8
font_03_sfnt_off00018975.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18975 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_04_sfnt_off00019e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19E8A 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3