Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c7dafa71932a8e…

MALICIOUS

PDF

78.7 KB Created: 2021-03-18 20:27:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 47db897e0471d73d3b108df5870e2daa SHA-1: d31a95946896af1f81bd4f90a4059b2bd0a91c10 SHA-256: b3c7dafa71932a8eed47ea14e732420d126d071f16ddbe9e50b9a118316abc32
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a strong likelihood of malicious intent. The ML classifier and ClamAV detection further support this, identifying it as a phishing or trojanized document. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=how+to+find+someone%2527s+brachial+pulse PDF link annotation
    • https://kibowoje.weebly.com/uploads/1/3/0/7/130775027/c5da3b08.pdfIn PDF document text
    • http://vizazovabula.mywebcommunity.org/mini_smart_socket_manual.pdfIn PDF document text
    • http://podarokinsta24.online/72545286438uyiz9.pdfIn PDF document text
    • http://sukutoxuwurif.mywebcommunity.org/liquidation_of_joint_stock_company.pdfIn PDF document text
    • https://gafujoneruxuf.weebly.com/uploads/1/3/4/7/134728567/nigalolisibuxal.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/16598896037.pdfIn PDF document text
    • http://kalowodopole.mygamesonline.org/oxford_read_and_discover_level_2.pdfIn PDF document text
    • http://rfs.team/1290021943lqwoy.pdfIn PDF document text
    • http://tixokapine.mypressonline.com/what_commands_can_you_ask_alexa.pdfIn PDF document text
    • https://cdn.sqhk.co/nebafori/eKgdhaY/95219179317.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/ludonototifo.pdfIn PDF document text
    • http://pukebebizadolu.mypressonline.com/glencoe_chemistry_matter_and_change_download.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/doxoguvunej.pdfIn PDF document text
    • http://betmoy54.com/mathematical_puzzle_questions_with_answersvn932.pdfIn PDF document text
    • http://italylife.pro/angry_birds_epicjlx3f.pdfIn PDF document text
    • http://mosebuzixat.mywebcommunity.org/bobajaxefejavezum.pdfIn PDF document text
    • http://tryraisins.club/throne_of_glass_download_ebookq0f11.pdfIn PDF document text
    • https://kefozonijufan.weebly.com/uploads/1/3/4/6/134689321/6994820.pdfIn PDF document text
    • https://cdn.sqhk.co/dazulegug/Tqhfjgc/80862756124.pdfIn PDF document text
    • https://cdn.sqhk.co/gofejenizew/p71XjfK/getty_images_free_for_commercial_use.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/2798ad78-d8bf-41ba-b348-f9479cca9886/is_the_beyond_sandwich_at_dunkin_donuts_vegan.pdfIn PDF document text
    • http://gumizaxewa.atwebpages.com/76747150164.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd6cd4e1-0fbb-4cb8-92d4-af991dc0f596/71610902255.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32153d99-573b-4a58-b19f-bb76ac7382c6/14767434911.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_off0000f59c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF59C 5620 bytes
SHA-256: 80faa2c483fee44dace98d6c671a282292d39e09e77e2b2c4e98cb0e342cff7e
font_01_sfnt_off000108a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A4 10740 bytes
SHA-256: e41f13edc5c649b604d24ad96c3de7e7c4cf5f4d31c729e511c686b4cff9bd00