Malicious PDF — malware analysis report

Static analysis result for SHA-256 1432d52b7c1ad90c…

MALICIOUS

PDF

73.5 KB Created: 2021-02-28 12:38:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a47a3bcffc6bb4645bf8e409fba1e66a SHA-1: ad465f060bd4ea463e12ea97af2d18e37bcdc20d SHA-256: 1432d52b7c1ad90c90f3129d8905a8beb0f9271a71402d65c0421ec38b868618
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jottigo.ru/wb?keyword=brinkmann%20electric%20smokers PDF link annotation
    • http://paktum.pro/manual_skills_and_mental_skillsfvwlq.pdfIn PDF document text
    • https://xevumijujivo.weebly.com/uploads/1/3/1/3/131383583/jakomu.pdfIn PDF document text
    • http://testrun.ru/oxford_discover_3_vkynuqi.pdfIn PDF document text
    • http://salonlabs.xyz/the_complete_guide_to_day_trading_markus_heitkoetterd8el0.pdfIn PDF document text
    • https://sizelelam.weebly.com/uploads/1/3/4/8/134867910/9098820.pdfIn PDF document text
    • https://fuzimisadu.weebly.com/uploads/1/3/5/3/135319831/tuxegutifezig.pdfIn PDF document text
    • http://sipikiwip.iblogger.org/97676668471.pdfIn PDF document text
    • https://xuzatikanuji.weebly.com/uploads/1/3/0/7/130775198/87a14e238.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503050/normal_5fd6c7c91a09d.pdfIn PDF document text
    • https://pojojupekofep.weebly.com/uploads/1/3/4/7/134754506/736487.pdfIn PDF document text
    • http://sexesex.site/ejercicios_de_olimpiadas_matematicas_para_primaria95ynu.pdfIn PDF document text
    • https://fidojosamesevuf.weebly.com/uploads/1/3/4/5/134594598/fazuwezut-lugitetiva-wiravebasew-mevoru.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/putovobokulana.pdfIn PDF document text
    • http://life-news.tech/how_to_put_software_into_hardware7bolf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pabaxonewopux.epizy.com/facebook_for_android_4._2_2.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_off0000e39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39B 5056 bytes
SHA-256: 49677570f0414d2fcc4da7ae83e43c5b99a37cf2248c8a0a3f9f7c1cf175f088
font_01_sfnt_off0000f4b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B0 10808 bytes
SHA-256: 82e30578e8ccaf205dd555564f41c9d1e9a4a2ac0e1e2762b44e68a65e0bafd1