Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d427b589d6d2e4…

MALICIOUS

PDF

77.5 KB Created: 2021-04-09 00:12:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e898f0f9f8c749d4f0c40992c43b7d71 SHA-1: 7e5bbf9c00144730e478618d6900e93001fc4d63 SHA-256: 80d427b589d6d2e4d3dd15a7d4160752d46f179bcf344de89c8ca1ac2b5418c1
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are hosted on disposable domains, indicating a link farm or phishing operation. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs and the heuristic firings point towards an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://lozipotod.ru/strik?utm_term=pratt+whitney+pt6+maintenance PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376362/normal_601bac91e52a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407807/normal_603c4dd84a506.pdfIn PDF document text
    • http://copyrighytsupport.com/idylis_freezer_reset_buttonmx73o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_603a1fa2a1a14.pdfIn PDF document text
    • http://dabejorugorazom.22web.org/1061146869.pdfIn PDF document text
    • https://cdn.sqhk.co/lebereme/jddifhe/snake_and_fruit_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/ponesigis/ga9gjTu/79850581229.pdfIn PDF document text
    • http://lnstagramsupportlives.com/widazedifivavurezezeruxnket.pdfIn PDF document text
    • https://visatedujapi.weebly.com/uploads/1/3/0/8/130814459/c4b0d01f92c33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464297/normal_600d99b836233.pdfIn PDF document text
    • https://fezagexagowib.weebly.com/uploads/1/3/5/3/135313062/ruwav-tufidazowituw-basedipuzinaz-kilafosarok.pdfIn PDF document text
    • http://xunawuloraxoru.22web.org/21636395004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469640/normal_605483ed4e437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369776/normal_60591ef72c8b8.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/Dhcqtz4/rewepademuxatoki.pdfIn PDF document text
    • https://cdn.sqhk.co/jafakitiw/k0jafhj/capsule_pharmacy_jobs.pdfIn PDF document text
    • http://4gusevshop.space/color_tunnel_2_unblockedftamm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495262/normal_60035326dbbd3.pdfIn PDF document text
    • https://cdn.sqhk.co/bibunifez/ggjFxib/snake_eyes_piercing.pdfIn PDF document text
    • https://femevidawivuk.weebly.com/uploads/1/3/1/0/131071063/dalirukod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jikibepedoroto.epizy.com/47476332948.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_off0000efe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE7 5312 bytes
SHA-256: 04772d04a4edbce4659b6a5d621a6ce2be93e6ae7a0e85b062bf16f99f4231a7
font_01_sfnt_off000101e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 11380 bytes
SHA-256: bbd13e9069415d86019a75d0edabfc1bdcab126a7a9371d7c1b0c2eb035f3ae6

Open this report in the interactive analyzer, or submit your own file for analysis.