Malicious PDF — malware analysis report

Static analysis result for SHA-256 93efe0ef59e7178a…

MALICIOUS

PDF

75.1 KB Created: 2021-01-01 04:01:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: cd7c0df1785238a171741939d0f6912e SHA-1: 430d4d2d40a12ac6f459f2989c3d2e67aecf29cd SHA-256: 93efe0ef59e7178ae1d1a603f9432d12337831602d873c167d9fddbc954ee4be
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious phishing document and hosts a large number of external links, some of which are SEO-focused. The document body, though partially obfuscated, contains text related to 'funny sms ringtone download', suggesting a lure. The presence of external URIs and a high ML score further support a malicious classification. While no scripts were explicitly extracted, the PDF structure and link farm suggest an attempt to redirect users to malicious content or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafftec.ru/strik?utm_term=funny+sms+ringtone+download+2019 PDF link annotation
    • https://sipasegeremiraf.weebly.com/uploads/1/3/4/4/134404187/suwaduniwudanora.pdfIn PDF document text
    • https://dotowukigirer.weebly.com/uploads/1/3/1/1/131163902/bumezaniwipax_razesuzif_savifuzejomu.pdfIn PDF document text
    • https://webesetumisurut.weebly.com/uploads/1/3/4/3/134318687/dikupoxoxolavu-tagaso-koxasuvokugav.pdfIn PDF document text
    • https://zojobowexiwe.weebly.com/uploads/1/3/1/3/131380894/zanenegubupogoj_gisiruzepi_nefuvokadoloja_mifafozolase.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/jjfgehf/risk_analysis_tools_in_healthcare.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/jalasilunaz/64013419163.pdfIn PDF document text
    • https://s3.amazonaws.com/nafamaragisek/cadbury_silk_song.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/angelo_s_soccer_corner_uniform_ordering.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/magic_the_gathering_arena_decks_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/munebugovokaniripe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39be2738-36d5-4b97-927c-0988748061c7/9852084673.pdfIn PDF document text
    • https://s3.amazonaws.com/xenepedu/unblocked_games_at_24h.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15cfbe3a-26ea-4382-a7f9-16890ebec9bc/zumuwu.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_off0000e87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE87B 5776 bytes
SHA-256: 265b09e876cac196556862c4d206f6cd391c266762b8e22597c68aebf6f3e011
font_01_sfnt_off0000fc29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC29 10408 bytes
SHA-256: 75f7e732757971890ec092ad104f028bbccc82563632ef9360f026e0aa1a59b9

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