Malicious PDF — malware analysis report

Static analysis result for SHA-256 21ee7fd5d4dfdae5…

MALICIOUS

PDF

86.1 KB Created: 2021-02-23 13:07:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fa77b1cd18ef0481ef5ebb078b57c8e9 SHA-1: a9630d1c83be2b23a61d513843b2458a13865f51 SHA-256: 21ee7fd5d4dfdae5cd9282f09d83e1d749dc3faec78eeb6b8fc3718132beb105
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a phishing or malware distribution scheme, likely leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://bologen.ru/123?utm_term=contax+t2+camera+manual PDF link annotation
    • http://esmoney.site/kptcl_assistant_engineer_electrical_bookgbvxk.pdfIn PDF document text
    • https://cdn.sqhk.co/kerutadit/eboNYPp/60513160381.pdfIn PDF document text
    • https://cdn.sqhk.co/pajijolabalu/ichTLGV/83998146629.pdfIn PDF document text
    • http://mebelintera.ru/674362390078mowp.pdfIn PDF document text
    • https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/famibizaxakobas.pdfIn PDF document text
    • https://poxapoxidofex.weebly.com/uploads/1/3/4/0/134016688/4627675.pdfIn PDF document text
    • http://zinuxuf.22web.org/37885086268.pdfIn PDF document text
    • http://dorightschool.com/incites_journal_citation_reports_fecyt08bnd.pdfIn PDF document text
    • https://mogijoduvide.weebly.com/uploads/1/3/0/8/130814471/wobubozes-sagaxewasu.pdfIn PDF document text
    • http://mirror-x.org/jlab_jbuds_pro_wireless_earbuds_pairing07qfx.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/chutti_tv_bomma_padamgxvlh.pdfIn PDF document text
    • https://cdn.sqhk.co/libibajuzumu/hihblD2/muvebegozuku.pdfIn PDF document text
    • https://degezumibupupek.weebly.com/uploads/1/3/4/8/134862322/zixetemikene-nadopatuzuburis-davupulusu.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/wozoxub/82156695380.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/chatous_apk_hack_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/38027106182.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/cube_call_recorder_acr_premium_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/72697601310.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/bazaar_full_movie_in_hd_300mb.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_off000112fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FD 4872 bytes
SHA-256: bee727294a617d6e57ae8cdfaac8b605d9737e6b3d6bb45912cb9cf0c76897af
font_01_sfnt_off0001237a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237A 11536 bytes
SHA-256: 4c3cf98604a036f91854ed013b59b2e78e83de240d27fd75f22a49fc9e63583b

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