Malicious PDF — malware analysis report

Static analysis result for SHA-256 09f4cacd379c908c…

MALICIOUS

PDF

81.0 KB Created: 2021-03-28 14:08:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 39d1165cf3257adae5a6c161c4ee81ba SHA-1: 5d2ef2ef25c51794840cbcfd22409e8559e0ad4c SHA-256: 09f4cacd379c908c92e485b6ee7ae5d38ad41aba3ad26a12c16a99475fbbcab2
66 Risk Score

Malware Insights

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

The ML classifier strongly indicates maliciousness, and the presence of multiple external URLs, some with unknown reputation, suggests a phishing or credential harvesting attempt. The document body, though heavily obfuscated, contains references to templates and downloads, aligning with a lure. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

Heuristics 4

  • 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://golowaki.ru/123?utm_term=libreoffice+draw+network+diagram+template PDF link annotation
    • http://forisawidokomor.sportsontheweb.net/fairy_tales_free_download.pdfIn PDF document text
    • http://metarapuw.mypressonline.com/meeting_agenda_form.pdfIn PDF document text
    • https://cdn.sqhk.co/bogovureg/1Phczhc/93437911972.pdfIn PDF document text
    • http://terugate.mypressonline.com/headway_beginner_fourth_edition_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/sus39jf/run_dash_app_in_jupyter_notebook.pdfIn PDF document text
    • https://cdn.sqhk.co/lagidexetin/7bgikab/alien_shooter_2d_java_320x240.pdfIn PDF document text
    • http://mubilinagak.22web.org/the_technology_of_anodizing_aluminum.pdfIn PDF document text
    • http://bepifukikuku.mygamesonline.org/97315767029.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_6030480edc445.pdfIn PDF document text
    • https://cdn.sqhk.co/dodalowogiv/b9S8pjz/ultimate_forest_simulator_all_bosses.pdfIn PDF document text
    • https://cdn.sqhk.co/sixerusesebu/jTBgGlx/pydroid_3_ide_for_python_3.pdfIn PDF document text
    • http://rajajime.mypressonline.com/ranusokoxukujunutigu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489983/normal_5fef9cfaf2cf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387565/normal_603baef586981.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/c3013c74-5ba6-44ac-b544-80469f3f6d6f/silent_knight_sk-5208_reset_code.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5c4eae0-cc47-407f-b983-4b9d15f4d650/kiridigeduvomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bf47955-c569-4d3a-8ff7-bd0a8a593727/gulikijupusoxologozipetun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b0e2a31-f593-4c58-9b87-0fff2e19ee4b/8063236603.pdfIn PDF document text
    • http://xaviwawav.epizy.com/wanozexujosukinefafe.pdfIn PDF document text
    • http://zorogeloma.epizy.com/sapigadojad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d033603-6d29-4ae0-bc27-93acfd6f3d6e/matelaxegalixowerosaregim.pdfIn PDF document text
    • http://feramivo.rf.gd/conjunction_sentences_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63700b26-41cd-40fc-b7c2-c19a65062905/other_names_for_mental_strength.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c64274a-9257-4e13-baf1-2015f00c8b51/tusodomufitugalasaz.pdfIn PDF document text
    • http://famajojub.rf.gd/51208525944.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/527714fc-5d84-4bb2-965e-c38fd1c43021/fusaxuva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d618210-9d68-452c-a2fa-f5a084782669/ar-15_pistol_muzzle_velocity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c585b804-c7de-492a-a796-fcb68754724f/lg_side_by_side_refrigerator_user_manual.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_off0000fb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6F 5536 bytes
SHA-256: 0513ce13f92dc8f579e2498d1dab18b7f5b4fb25e5f51f542fcaabd10e3bd5b2
font_01_sfnt_off00010e46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E46 11072 bytes
SHA-256: 657bd053be788157af9c5c38d0b9e845c33b23baf1ace46eb1708dbed475ebc1