Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f34b5a98566d9a…

MALICIOUS

PDF

81.9 KB Created: 2021-03-03 20:43:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 509abe5f6c9bb2a6be8455cd87d3fdbd SHA-1: 529ec51382fccb9f74d573eabca5fe8f81f00cf1 SHA-256: a2f34b5a98566d9a6ba3ef312ca5f89c16deb14fc2e68896947654fd2a5131cc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=slimline+form+factor+similar+to+atx PDF link annotation
    • http://nopuvobetag.mygamesonline.org/82758149399.pdfIn PDF document text
    • http://nezesepibakow.iblogger.org/26849052715.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451932/normal_5fd1769b32346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470409/normal_602470b6c2b4e.pdfIn PDF document text
    • http://moviesaddaa.online/jitakozidexurigazumr4c72.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/jfgiZgd/gudulizubojisaxu.pdfIn PDF document text
    • http://sell-toclick.online/cohen_s_effect_size_guidelinesyete1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414360/normal_601e260d9dea5.pdfIn PDF document text
    • https://cdn.sqhk.co/wavoperusina/m1jijdQ/tejowiruvibimasob.pdfIn PDF document text
    • https://nexudusuje.weebly.com/uploads/1/3/0/7/130740550/5ff1409fae3936f.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/veganijetipajig.pdfIn PDF document text
    • https://polisurev.weebly.com/uploads/1/3/0/7/130740145/341202.pdfIn PDF document text
    • https://cdn.sqhk.co/vajirasavuz/fMdlii5/55549737288.pdfIn PDF document text
    • http://kenufapozij.22web.org/marine_corps_physical_fitness_test_plank.pdfIn PDF document text
    • https://verakolor.weebly.com/uploads/1/3/1/3/131379730/buliliw.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/varuretikanuwuderemo.pdfIn PDF document text
    • http://tryici.xyz/interview_questions_to_ask_your_potential_manager28wtf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pumejusatojajeg.rf.gd/rowdy_baby_song_free_isaimini.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_off0000fda5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA5 5200 bytes
SHA-256: f407274933dd7a31c14d94d0a704a0bb40c617f663968739b992fa0b60d50cf3
font_01_sfnt_off00010f3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F3E 13576 bytes
SHA-256: b188f304f06c91be485bdcf6b10e14c3c1569ff3ec6ec92e4d80989c003739a5