Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb0044f95df18319…

MALICIOUS

PDF

105.1 KB Created: 2021-03-13 21:58:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1063cd6d655bf6e721ad35de2d9bf911 SHA-1: 4e555682febd8affe538b6f648f3389b3772cacb SHA-256: bb0044f95df183197241d46c221d27a3e66ecfcc45a3994cea89c7ea5ac615b6
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. ClamAV detection and ML classification strongly indicate malicious intent, specifically identified as phishing. The presence of external URIs suggests the document is designed to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://fokemale.ru/wix?keyword=devil+may+cry+1+enemy+files PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463529/normal_602ab5caa28b4.pdfIn PDF document text
    • http://leftoutclub.com/pentatonic_guitar_licks_tabytw7q.pdfIn PDF document text
    • http://pubggaming.online/togupubunidazevopaozxt7.pdfIn PDF document text
    • http://lifeshop.pro/nonugetozukagewumixukaxidio3c.pdfIn PDF document text
    • http://show-visitor.xyz/wonderwall_projector_manualinm43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497109/normal_6019dea33e3af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402717/normal_5fee99a5172fb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421768/normal_5fc925d24fe6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417817/normal_60373d25e8041.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_601266ceb9e97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529780/normal_5fe97412f359b.pdfIn PDF document text
    • http://insta-sale.site/what_does_the_serenity_prayer_mean_to_you93hw9.pdfIn PDF document text
    • http://zuxekagapefe.mygamesonline.org/is_project_management_a_good_career_in_india.pdfIn PDF document text
    • http://linodogeb.scienceontheweb.net/idiom_dictionary_free_download_english_to_sinhala.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/bemazuvewiteref67kva.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367914/normal_6006e620b671d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448735/normal_5ffc1b47ac59e.pdfIn PDF document text
    • http://m-ryanaf.site/acrylic_sheet_sizes_home_depototban.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/94cbcbc7-2fab-4043-a52a-fcc085fc2377/bazusawaxol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/630abaa0-a30c-4bed-9094-9f0226a219e1/focusrite_scarlett_2i2_second_generation_drivers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb08d2b-356d-45fa-824d-217425286b23/sewewawaxebiwituzun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f18db3-202c-44f3-a9eb-52448225f45a/xebefanekamepezepape.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/hillsborough_county_first_day_of_school_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3585ef6b-6bfd-4fcf-ae5e-3029ddb24459/zifedopo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000151c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x151C2 4840 bytes
SHA-256: 2af56fdaed4f75bdde2bcec2469c75e8dc24d9589293f4c56e2b2c828ab551a7
font_01_sfnt_off00016221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16221 11384 bytes
SHA-256: 44f9b02c6855704868e7abef89332e409ccc3ae532822279a02d9d75111f0ed6
font_02_sfnt_off000188e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188E7 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378