Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af1cf30298acac4…

MALICIOUS

PDF

90.6 KB Created: 2020-12-02 00:32:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 4651cc04f4576aadfeeedf69ca38b3fd SHA-1: 1776090588d1b0f25481cf93398e74ba3c17058f SHA-256: 4af1cf30298acac477781b20dae41226055ac68c1807001e0e6f035647173300
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=10+point+grading+scale+gpa+calculator PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466411/normal_5fafe6b441f01.pdfIn PDF document text
    • https://bajewenizuku.weebly.com/uploads/1/3/4/4/134475359/8739287.pdfIn PDF document text
    • https://tejubodefi.weebly.com/uploads/1/3/4/3/134351051/xutumumirujiv-kuvevabo-kogag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445882/normal_5fac2b7a2dbc4.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
    • https://s3.amazonaws.com/wiwamoxamo/buku_agama_islam_kelas_11_kurikulum_2013_smk.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/mikunipikogebagilezilag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3856871-de14-4b47-b463-34b6c7f064f4/vexovotuvimu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf51bd18e72e5fdbce585f/1606373821995/83620724084.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5cd9289-e9f8-4706-83a6-5c9cdfc514c5/a_wrinkle_in_time_study_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f4078787e879896c419e/t/5fc6c40ec7c45a5eaf903118/1606861839079/xebop.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/layperson_cpr_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/24044700116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36e77d87-e24d-4520-ade2-940e4a7c7703/borage.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_off0000cdc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC1 17064 bytes
SHA-256: d33b944fed19250b99ff7e5b9617d0aee36e8a3e0fcf8f48ae85ea0747f2c874
font_01_sfnt_off000104ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AC 5224 bytes
SHA-256: 67f0f40cf2fdfff5e77292779795ef13aeae1329ecf3c0360256e58bc57fae93
font_02_sfnt_off0001166e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1166E 10360 bytes
SHA-256: 637622649d63281903d2ce41c4a5f9a578069783679afa98505370ecda126dfc
font_03_sfnt_off000139ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139FF 16068 bytes
SHA-256: d7b25dc5f512836eb4e96674031d2352042d4610eccc34473d5b6aff049d846c
font_04_sfnt_off00014e9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E9A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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