Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffcdf4830a44932f…

MALICIOUS

PDF

75.6 KB Created: 2021-01-31 17:25:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: bea17367329184bf4599e2663d13ce5c SHA-1: f7e5a1b17e310f37bd1e8f64034be8b29e274b5e SHA-256: ffcdf4830a44932fe69d395d888fe3be0f360e8c0aafddbe4c51bd597c0eb46a
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable hosting sites, many of which are associated with link farms and potentially malicious content, such as the 'fire emblem heroes mod apk 4.7.0' lure. The presence of these link farms and the nature of the lures suggest an attempt to trick users into downloading potentially harmful applications or visiting malicious sites.

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
  • 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://seumenha.ru/123?utm_term=fire+emblem+heroes+mod+apk+4.7.0 PDF link annotation
    • https://dilozerekake.weebly.com/uploads/1/3/1/4/131452754/xafugotu_fimaboberawe.pdfIn PDF document text
    • http://familyit.info/warship_craft_hack_ios_downloadgyh3m.pdfIn PDF document text
    • http://boomerangoo.site/mimpi_ular_kobra_masuk_rumah91ja4.pdfIn PDF document text
    • https://cdn.sqhk.co/fusajovogi/eghU3he/mozevotufiverefonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459337/normal_600f3014d0428.pdfIn PDF document text
    • https://kewetarutedur.weebly.com/uploads/1/3/0/9/130968996/2908084.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/ijMwQh4/wixasilimipuxuziwafeti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387412/normal_5ff460ec2a214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_600da51491f1f.pdfIn PDF document text
    • http://damvglaz1.xyz/part_of_speech_worksheet_for_grade_4is82p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367297/normal_6016ac1b2d8ed.pdfIn PDF document text
    • https://nalufubuxozukex.weebly.com/uploads/1/3/4/4/134479837/doxazosubire.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/pivixape.pdfIn PDF document text
    • http://verenica.net/amplificadores_operacionales_libroyw3sp.pdfIn PDF document text
    • https://sujabowumosof.weebly.com/uploads/1/3/1/3/131398195/3965424.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366362/normal_5ff6b204b6eda.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502567/normal_5fe2946c5db5b.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/ladiwuzetawedi/1882929795.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/sonotuzutexodofokonasop.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/accidents_in_nj_reported_today.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/rx_hundred_full_video_songs_mp4.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0A 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off0000e84d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84D 5700 bytes
SHA-256: 27805f2fbb588528f83ab852f69d89fd97a0099e326ca28638828300c7af3a15
font_02_sfnt_off0000fb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB87 10748 bytes
SHA-256: 28540c5096209e7fa2d16658ea97d44ff83009e95120011598b817fd1f05efb5

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