Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb6b30ad8f6ed11…

MALICIOUS

PDF

77.6 KB Created: 2021-03-15 22:42:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1722b813223b157811352d22b963e606 SHA-1: 88d3c3f35427a76e4215a0c581f4c5414b10f716 SHA-256: 8fb6b30ad8f6ed1197491b36c1ff597bfeaf78184ded9b949dedd2518b5086ce
74 Risk Score

Malware Insights

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

This PDF document was flagged by an ML classifier as malicious. It contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users. The presence of a 'download button' heuristic further supports the conclusion that the document's primary purpose is to trick the user into downloading a secondary payload. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://vilenefex.ru/123?utm_term=super+bomberman+apk+mod PDF link annotation
    • https://cdn.sqhk.co/xesoralo/3jdAOii/lanalojubokivapubi.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/22428472633lnwra.pdfIn PDF document text
    • http://myimperfectmomlife.com/molenavijidbddjl.pdfIn PDF document text
    • http://sosuziba.mypressonline.com/64368340866.pdfIn PDF document text
    • https://porojole.weebly.com/uploads/1/3/4/4/134462866/5228218.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/fodiramowu.pdfIn PDF document text
    • https://cdn.sqhk.co/kubabulukod/id8KheQ/captions_for_photoshoot_on_instagram.pdfIn PDF document text
    • http://tetupamino.mywebcommunity.org/gokur.pdfIn PDF document text
    • https://bilugiwunifi.weebly.com/uploads/1/3/1/4/131408415/pivikobadigujak-firizonosekep-gawibasabamun.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/vorebimiripanotozabanute.pdfIn PDF document text
    • http://idealica-italiauficiale.website/folder_binder_template_wordpfe2h.pdfIn PDF document text
    • https://pevusipifo.weebly.com/uploads/1/3/4/8/134863194/sabuwejesagi_bibulumojezibij_zogojujijufuse.pdfIn PDF document text
    • http://vowufijetapiko.sportsontheweb.net/2277812301.pdfIn PDF document text
    • http://clubstore.info/how_to_setup_hp_officejet_pro_8500_wireless_printerudieo.pdfIn PDF document text
    • https://cdn.sqhk.co/xadowififux/gxcjcAI/lajakerukenid.pdfIn PDF document text
    • https://sevokubataper.weebly.com/uploads/1/3/0/8/130814346/412228.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://katibabiziv.epizy.com/fm_global_product_approval_guide.pdfIn PDF document text
    • http://donijexufenu.onlinewebshop.net/natada.pdfIn PDF document text
    • http://fobukisa.rf.gd/salosix.pdfIn PDF document text
    • http://fewetero.epizy.com/simple_vehicle_bill_of_sale_template.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e799.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE799 2960 bytes
SHA-256: 00c0a141202c10936ceac8b8df9df75720096dbedde9c5fde8d9f3447cbb363c
font_01_sfnt_off0000f208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF208 5200 bytes
SHA-256: dceabf3b242922619f6424d3b67fd3ca3675d5bf265af2d4221a7eb564027e7e
font_02_sfnt_off00010399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10399 10884 bytes
SHA-256: 909b33f736b5ceb4e9cf1274b388af69e1e88518025e4f4fb62b1bbf593f13c6

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