Malicious PDF — malware analysis report

Static analysis result for SHA-256 e75b4a51c4df2d64…

MALICIOUS

PDF

77.8 KB Created: 2021-04-01 09:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dc2bd1a31ca15643d42c10ac3acbaf75 SHA-1: 68f95e5b40add39a7babda5d847eb015e1f886c7 SHA-256: e75b4a51c4df2d6419c1325b97f33ffd337890d85480c62a12502befd1b17a0b
254 Risk Score

Malware Insights

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

This PDF contains numerous embedded links, many of which point to redirectors designed to lead users to malicious content or phishing sites. The heuristic firings indicate a critical link to a known malicious redirector and a large number of external PDF links, suggesting a link farm for SEO manipulation or malware distribution. While no scripts were explicitly extracted, the PDF structure and link analysis strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/strik?utm_term=elk+m1+erp+software In PDF document text
    • https://s3.amazonaws.com/loneminovu/vocaloid_editor_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/whatsapp_for_nokia_206_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/global_community_definition_in_sociology.pdfIn PDF document text
    • http://nugowimabu.mywebcommunity.org/anthem_for_doomed_youth_questions.pdfIn PDF document text
    • https://gifofelonapa.weebly.com/uploads/1/3/0/7/130775883/vonilopalumejidowe.pdfIn PDF document text
    • http://jexekiraj.sportsontheweb.net/autodesk_design_review_convert_dwg_to.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/cartoon_network_live_tv_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/mogenedanirevame.pdfIn PDF document text
    • https://cdn.sqhk.co/jojojidatun/xqgegff/army_draw_form.pdfIn PDF document text
    • https://cdn.sqhk.co/forexidof/5nbtgig/doomsday_preppers_food_list.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/xosewolivugituxeka.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/cjfuhjM/vusavenuleduvimom.pdfIn PDF document text
    • https://rolugoxeve.weebly.com/uploads/1/3/1/3/131380951/lelebo.pdfIn PDF document text
    • http://ninomut.sportsontheweb.net/why_does_my_lg_tv_screen_keep_flashing.pdfIn PDF document text
    • https://cdn.sqhk.co/bosejadukifo/E5hjaLL/floating_underwater_car_free_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/gih62KN/mumanelinaxilum.pdfIn PDF document text
    • http://dogalijun.scienceontheweb.net/best_arm_workout.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/67311640184.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/2NhgKw4/zoxoxudidivilikozotapona.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sekuwomexapa.myartsonline.com/gumerabirepalixamaxuwonig.pdfIn PDF document text
    • http://vesedakowata.onlinewebshop.net/abituriyent_jurnali_2_2020.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_off0000e72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72D 4848 bytes
SHA-256: e7e816ffe5eb98156fc53afb352b757b393edfcbae4fc963e1dff0e934057327
font_01_sfnt_off0000f7b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B7 10716 bytes
SHA-256: 9b58fa6052ec13581df0f54fda2812f2c5d2979a8e27750321c2de297d35a38f
font_02_sfnt_off00011c28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C28 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3