Malicious PDF — malware analysis report

Static analysis result for SHA-256 d761c053926d8129…

MALICIOUS

PDF

84.4 KB Created: 2021-02-25 13:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: ce05277ba02b1c54a27c4628f2cf8e30 SHA-1: 649df4f0ef7c5d078c13896b18a8df6af6a68097 SHA-256: d761c053926d812938ad6b25eeae67aa49523c782caf9c3d2aeee3fee61924db
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or SEO spam. While no scripts were explicitly extracted, the presence of numerous URLs points towards an attempt to redirect users to potentially malicious sites.

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://leonvi.ru/wix?keyword=strong+acids+and+bases+ap+chemistry PDF link annotation
    • https://wefigofotagovir.weebly.com/uploads/1/3/4/8/134864379/d8622a28daed21.pdfIn PDF document text
    • https://tepidupelagoxu.weebly.com/uploads/1/3/4/4/134472529/2322549.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/hggexhj/offroad_outlaws_money_glitch_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/rozesivotix/ah5N2ig/super_fast_drift_trike.pdfIn PDF document text
    • https://fuwudasex.weebly.com/uploads/1/3/1/0/131071129/dibotarasawugi-suzikopo-kofozodo-fugagabo.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/24787811588.pdfIn PDF document text
    • http://glawerry.online/gilotibusonofic0cdg.pdfIn PDF document text
    • http://fepaporipevari.mypressonline.com/70906846929.pdfIn PDF document text
    • http://winoxolupuvil.getenjoyment.net/network_support_interview_questions_and_answers_for_l1_level.pdfIn PDF document text
    • https://cdn.sqhk.co/jezaziritav/hRVu5YI/hypixel_bedwars_map_rotation_november.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://vimixof.onlinewebshop.net/who_is_the_poorest_rich_person_in_the_world.pdfIn PDF document text
    • https://s3.amazonaws.com/lijulijowivaze/nowod.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/anemia_hemolitica_autoinmune_diagnostico.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/dehati_anpadh_hari_se_song_320kbps.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/37588641252.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/lolojivosarom.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_off0000fe56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE56 5588 bytes
SHA-256: 9861f825ff238a9a9746b486cb6637aeb57e5c2cf25ba74961401ba124d752a9
font_01_sfnt_off00011116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11116 10988 bytes
SHA-256: 06221e888888bce51874ddf3f614dc547f8c8ded7f43873b8b5e5d86a945d376
font_02_sfnt_off0001365f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1365F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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