Malicious PDF — malware analysis report

Static analysis result for SHA-256 59bddc9a898f0b56…

MALICIOUS

PDF

129.5 KB Created: 2021-04-23 12:39:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3e8560e7afc4ed8844123b59e2d6093b SHA-1: 9b3bea9def5d4e1d8915cdef119920d38963a6bc SHA-256: 59bddc9a898f0b561c65a8bab33ff464e3f3435fdd82b228140674d75a419214
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The embedded URLs and the heuristic firings strongly indicate that the primary goal is to redirect users to potentially harmful external sites, possibly for malware distribution or credential harvesting.

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
  • 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://xezojetit.ru/strik?utm_term=history+of+economic+thought+book PDF link annotation
    • https://dufadijikog.weebly.com/uploads/1/3/5/3/135325035/xumupegolam.pdfIn PDF document text
    • https://cdn.sqhk.co/sofizagumup/xPhfmVY/direzodesuwuwitugim.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/gd3igjd/gakibaximelelemenakirono.pdfIn PDF document text
    • http://subbellassecret.com/vortex_cloud_gaming_hacked_apk_free_downloadpbxl7.pdfIn PDF document text
    • http://leftoutclub.com/61983517558novqg.pdfIn PDF document text
    • https://cdn.sqhk.co/linidivez/0gcB0hc/army_tank_games.pdfIn PDF document text
    • https://devudupaf.weebly.com/uploads/1/3/4/8/134880603/gifozipobole-pikazato-zotababaj-rarakejijexor.pdfIn PDF document text
    • https://cdn.sqhk.co/gajeneset/RRihqpb/furugunoxoxowu.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/2gdiflh/kuvupugudifimenatumafa.pdfIn PDF document text
    • https://cdn.sqhk.co/jefutubup/biiijha/perunulipajutonepis.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwikiw/aijIhhf/gedija.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/dIjiejc/legend_of_kung_fu_rabbit_full_movie_english.pdfIn PDF document text
    • https://zarogamotelim.weebly.com/uploads/1/3/4/3/134344532/8998498.pdfIn PDF document text
    • http://meinekarten.best/lewebunivetibeloxaliyueqj.pdfIn PDF document text
    • https://cdn.sqhk.co/mebinolopuf/5jvaijA/articulos_de_reposteria_cerca_de_mi.pdfIn PDF document text
    • http://instasavephoto.com/84814089079x8tot.pdfIn PDF document text
    • https://cdn.sqhk.co/nufomewo/fzqjghd/juventus_jersey_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/Bx4tGhf/t_i_game_toca_mystery_house.pdfIn PDF document text
    • https://cdn.sqhk.co/demanajinu/UuieUdD/samsung_level_u_wireless_headphones_replacement_parts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9d51f49-2db2-4d84-bd18-f920c2f31d6a/club_car_precedent_light_kit_voltage_reducer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcc05434-7873-4a31-a2a3-9006505b0d20/the_language_of_god_chapter_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97f2b322-a8de-4b29-a5f4-7a08179c7436/dymo_letratag_label_maker_power_cord.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d6a1106-b254-4aa8-bafe-eb3986a97efb/robinair_34788ni-h_filter.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_off0001bf58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BF58 5320 bytes
SHA-256: 5398f61da51d098c6d7f3a372b2ba91966c2bd8178a48f0a6710dc423ebf645b
font_01_sfnt_off0001d15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D15C 11824 bytes
SHA-256: bad4933111f86589ebb6e309b25dd840f9edb44443e973752407f8309af8a652