Malicious PDF — malware analysis report

Static analysis result for SHA-256 88bf5e791c43a5ee…

MALICIOUS

PDF

78.5 KB Created: 2022-05-02 02:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 9c921595a7073a2dc60a9c1aa5fad4c5 SHA-1: e3f10ae42f4f43dca60d407a7a8c53e6672dbff6 SHA-256: 88bf5e791c43a5eed1606c742254d1e31917c0485065424c7267553e1d51e10d
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 7

  • 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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://lovig.co.za/YmrXLWy8?keyword=how%20to%20get%20multiple%20streams%20of%20income%20reddit PDF link annotation
    • http://kargo-box.com/uploads/files/44411777316.pdfIn PDF document text
    • https://bobiputab.weebly.com/uploads/1/3/2/8/132814039/7901855.pdfIn PDF document text
    • http://vincityhomes.vn/wp-content/plugins/super-forms/uploads/php/files/uo9nuq4m0ohtrcpj7mbgamok0q/zevozositafifalikedexutu.pdfIn PDF document text
    • http://top1np.com/ckfinder/userfiles/files/88185515951.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/55eb7046c32f672e19d0caa8fc1acf09/xonafevodomizejepi.pdfIn PDF document text
    • http://dgjinhak.kr/DATA/upload/files/202204211018041020.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1620b4cd987ff9---19761337797.pdfIn PDF document text
    • https://gajatizu.weebly.com/uploads/1/3/5/3/135315297/wenejewinabifed.pdfIn PDF document text
    • https://tewurogiteme.weebly.com/uploads/1/4/1/2/141232245/3106546.pdfIn PDF document text
    • http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/73231691290.pdfIn PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/woxukadur_xumanele.pdfIn PDF document text
    • https://gomemaliji.weebly.com/uploads/1/3/4/0/134040406/75ee81de2a0ea27.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/162489aa6116ab---wanibaxosizofimap.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622bdf4d9ba8d---jirotagapuduluburumijejor.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/148179599.pdfIn PDF document text
    • https://gunimumatepatu.weebly.com/uploads/1/3/5/3/135313318/kotoniro.pdfIn PDF document text
    • http://charmingcurls.se/upload/file/73339993018.pdfIn PDF document text
    • https://lukofobetu.weebly.com/uploads/1/3/4/3/134317857/vilugulina.pdfIn PDF document text
    • https://jojipizi.weebly.com/uploads/1/3/1/6/131606457/piduvale.pdfIn PDF document text
    • https://siromalad.weebly.com/uploads/1/3/5/3/135312661/9568186.pdfIn PDF document text
    • http://mxagproducts.com/upload/browse/file/29485375544.pdfIn PDF document text
    • https://rawitexebava.weebly.com/uploads/1/3/4/4/134487877/6942801.pdfIn PDF document text
    • https://setejurisu.weebly.com/uploads/1/3/2/7/132740540/wonoxupe.pdfIn PDF document text
    • https://wirimodarezekas.weebly.com/uploads/1/3/5/3/135314182/savowegelopa.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000cd01.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cd01.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD01 16784 bytes
SHA-256: d6f32cad121cf31adfd50f3d2221c4360655bd0a03499e72b5b3e9b77d52c946
font_01_sfnt_off0000f8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D7 11140 bytes
SHA-256: 0b71fdb8aa831ddf7fe341099bd1a771c0ae04cb1eb4405aac7189ed57cf32bf
font_02_sfnt_off000112b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112B1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1