Malicious PDF — malware analysis report

Static analysis result for SHA-256 16980e2c402952e6…

MALICIOUS

PDF

73.7 KB Created: 2021-02-05 15:49:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: e9b3a557a61efeb6c0097d61febb90f1 SHA-1: 41ff4467e89562497892bbebffacd920517eab1c SHA-256: 16980e2c402952e64949ebc96b8d8a79f1acf1c62082665a66223980598a3db8
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to domains associated with link farms and disposable hosting, as indicated by the 'PDF_SEO_LINK_FARM' and 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristics. The ClamAV detection and ML classifier also strongly suggest malicious intent, likely phishing or spam distribution. The embedded URLs and the nature of the link farm suggest an attempt to direct users to malicious content or further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://maypoin.ru/123?utm_term=the+forest+boss+monsters PDF link annotation
    • https://cdn.sqhk.co/wifukatar/hrIheMi/mastercraft_auto_repair_manahawkin_nj.pdfIn PDF document text
    • http://wegansit.space/dagger_of_returning_5e9e6t4.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/tNkjdHB/dark_theme_oneplus_6t.pdfIn PDF document text
    • http://misstourist.info/titanic_music_sheet_recorder4xkbj.pdfIn PDF document text
    • http://unonatur.space/fitbit_inspire_2_clipmu2bj.pdfIn PDF document text
    • http://iqecoportal.ru/practice_variables_and_expressions_answer_keyra6vt.pdfIn PDF document text
    • https://cdn.sqhk.co/kuruwoke/QgjXjqC/vasadipuwawugunaxozen.pdfIn PDF document text
    • https://cdn.sqhk.co/mapelimujeku/icacYhe/business_development_and_strategy_manager_job_description.pdfIn PDF document text
    • http://obzorov.site/calligraphy_stencilsxd2i1.pdfIn PDF document text
    • http://logvoz.ru/59367181344m9vh5.pdfIn PDF document text
    • https://cdn.sqhk.co/dejegekonula/5ieJdkJ/voveduvizimegobufojiwip.pdfIn PDF document text
    • http://intekzafast.online/57936258704853wq.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/gjDohaO/the_sims_freeplay_android_full_download.pdfIn PDF document text
    • https://sewatebemadog.weebly.com/uploads/1/3/1/1/131164437/sevixamilemuzufurus.pdfIn PDF document text
    • https://gapigapale.weebly.com/uploads/1/3/4/8/134896702/sodulupod.pdfIn PDF document text
    • https://cdn.sqhk.co/vimexuda/egeibPP/lexiparumiwovabizevilelis.pdfIn PDF document text
    • http://damita.fun/realtek_rtl8822be_driver8wlnf.pdfIn PDF document text
    • https://cdn.sqhk.co/luwukamuku/hcTjbkD/bet_account_paypal.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/gavobawum/97114583641.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/98049399292.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/85406311540.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_off0000e37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37A 4856 bytes
SHA-256: 886b3e2db26a69604c81a5911159c9f86055a897993e6dfb5bfc841790149e56
font_01_sfnt_off0000f3d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D6 10932 bytes
SHA-256: df335d57ecbe7964f2a23364e9adcf3f94d48ed61cc97239d43cb2d079eff170

Open this report in the interactive analyzer, or submit your own file for analysis.