Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7685a4f7078c956…

MALICIOUS

PDF

85.6 KB Created: 2021-03-26 07:40:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 85ba659b0846438dbad82d41b2497b67 SHA-1: d99a96faed2c6cf2a74cad241117e600e34d39c3 SHA-256: d7685a4f7078c956a65617e724f8b103817a18c0b19aabca71c46443fbe2ccbc
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs and the heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' suggest the document is designed to redirect users to harmful sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=alanya+tourist+map+pdf In PDF document text
    • https://s3.amazonaws.com/zopenave/library_cataloguing_practice.pdfIn PDF document text
    • http://genusadnlo.space/rise_of_the_kings_mod_apk_latest_versionnybdk.pdfIn PDF document text
    • https://s3.amazonaws.com/pajeriramal/90255280210.pdfIn PDF document text
    • http://zelijek.iblogger.org/17777177957.pdfIn PDF document text
    • https://xukoperupe.weebly.com/uploads/1/3/4/7/134743664/8175236.pdfIn PDF document text
    • http://shoop-fm.ru/reckless_rider_3d_hoverboard_smart_self-_balancing_wheel5up7l.pdfIn PDF document text
    • http://medyayazilimtr.com/9th_class_ka_english_bookakjr7.pdfIn PDF document text
    • https://pujuwofox.weebly.com/uploads/1/3/4/8/134882524/8748196.pdfIn PDF document text
    • http://lujovotoloxes.iblogger.org/kelalowatokig.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/21483297063.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/how_to_check_irs_refund_status_for_prior_year.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489969/normal_60035c13a02de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390095/normal_5fd1d095d1cf3.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://thelait.pro/law_of_contracts_final_exam_real_estatey2vyr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://71347f20-8353-4153-bebc-dd2a28b3a5cf.filesusr.com/ugd/a382ee_3ca68b7a4a0c494ba88a2ddd54c5e1a3.pdf?index=trueIn PDF document text
    • http://mabezaze.epizy.com/california_dmv_tests.pdfIn PDF document text
    • https://d8acad56-eb9a-42d1-a06c-a695c5b02328.filesusr.com/ugd/0ad6c7_7f983942b6d84807ad2184404fadfd4c.pdf?index=trueIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_3d7f3332edfe4875b3907345025cc69d.pdf?index=trueIn PDF document text
    • http://rakemexovujepez.epizy.com/fawenekinusijokadezirobu.pdfIn PDF document text
    • http://fiwajewefafomi.epizy.com/37759556830.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_off00010ff3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF3 5276 bytes
SHA-256: 22289f60fad4669625ab84bbbca096163b30fdc30fb0f73207dbc1d9536b9e68
font_01_sfnt_off000121dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121DC 11724 bytes
SHA-256: 15e49238b4f770ffb370791151079985f57c6c554637d8ba001040434264b161