Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d3408d39f4f14c…

MALICIOUS

PDF

72.5 KB Created: 2021-03-04 09:46:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b533228d80324629f9d536037c03a969 SHA-1: 2caeef06ba409f39bcadf3ca2a9b5fa199b945c1 SHA-256: b0d3408d39f4f14c713346c7a3df14e1386ebf208d8c3cbdb778ab479efe9134
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=cateye+micro+wireless+setting+for+29er In PDF document text
    • http://ellmax-site.xyz/sakegotelipezito3d11d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390383/normal_601454c16cefe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413473/normal_5fd3c01e4d0d4.pdfIn PDF document text
    • https://venewosusi.weebly.com/uploads/1/3/1/3/131398385/pawol-kusumefiwido-gifizovupuvevis.pdfIn PDF document text
    • http://santaparker.store/kawasaki_440_engine_hpwzbsb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385869/normal_6000178c1e213.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5feb2379df068.pdfIn PDF document text
    • http://alex-travel.moscow/94450269227t2rh4.pdfIn PDF document text
    • http://avit0.pro/vivitar_outdoor_rock_speaker_reviewslf1ne.pdfIn PDF document text
    • https://tamusibexo.weebly.com/uploads/1/3/5/9/135966636/d58e4dc322d3c.pdfIn PDF document text
    • http://avlto.best/10281118716354rf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nilovumilof.epizy.com/sketchup_pro_2017_plugins_free_download.pdfIn PDF document text
    • http://xevivalekivo.epizy.com/lirupidejor.pdfIn PDF document text
    • http://gelifadewew.rf.gd/acquisition_strategy_document_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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ddf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF0 5588 bytes
SHA-256: cf18eaca206fac349b7ef2c91e60350ed96d51809a1d1553d4d6b4e6f79847cd
font_01_sfnt_off0000f0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F7 10560 bytes
SHA-256: 85a188f77c9ec92b9b58080b2567a281c8b2c78886b44ae0ee65208e84e6ed19