Malicious PDF — malware analysis report

Static analysis result for SHA-256 e97476f2abab8ee9…

MALICIOUS

PDF

78.0 KB Created: 2021-03-16 21:13:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 04965532b697d9de214f14942b9b88d3 SHA-1: a91bf0859fe2f8faa0468cdc64e22519ec442402 SHA-256: e97476f2abab8ee9a4b731d8cd4c1c6e04771062d841690568989d1499cfe0d5
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, contains keywords related to car parts and technical terms, potentially used as lures. No scripts were extracted, but the presence of numerous external links points towards a phishing or SEO manipulation attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/wix?keyword=quadrajet+divorced+to+manual+choke+conversion PDF link annotation
    • https://cdn.sqhk.co/satasevubu/gvoidd7/webevaxozebowelovojifil.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/birusodu_bawetofixi_mekexewa_jujolif.pdfIn PDF document text
    • http://vizojuzoninunoz.scienceontheweb.net/historicism_architecture.pdfIn PDF document text
    • https://cdn.sqhk.co/xoxamomajil/igiiGgd/dabirorufirijebavazatevo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459166/normal_6044bb5899d58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452852/normal_604205ccae43c.pdfIn PDF document text
    • https://gobodozi.weebly.com/uploads/1/3/1/3/131398455/pagekobol.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/chattanooga_c2_hydrocollator_manual.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368767/normal_5ff3d490016c4.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/OjjOJZM/small_business_ideas_entrepreneur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4126ce46-c1ce-4181-ba2f-ccbdb0088576/faxujozumug.pdfIn PDF document text
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_6139509ff44146e897167d10ffe90b77.pdf?index=trueIn PDF document text
    • https://cad90261-f038-4e8a-b384-2e0e37e6cb8c.filesusr.com/ugd/4c4e45_7962658f60f8412986f3513fffe9a2d2.pdf?index=trueIn PDF document text
    • https://0443db59-9f9d-4031-b786-8a5723798135.filesusr.com/ugd/ab62d6_42a7e54c2d3b4c0cafa878366bc71e87.pdf?index=trueIn PDF document text
    • http://vawerudarasikow.myartsonline.com/how_to_set_a_luxpro_p711_thermostat.pdfIn PDF document text
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_1a4138b1c797410f9defe37bb88d6219.pdf?index=trueIn PDF document text
    • http://pavafisufopu.myartsonline.com/security_officer_training_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b948a889-a308-4567-abd2-22aeaf5f8700/73392817091.pdfIn PDF document text
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_b05f83d6b14f4aa6a6ca5ca92a5d82fb.pdf?index=trueIn PDF document text
    • http://xikusaduxofi.atwebpages.com/percy_jackson_and_the_lightning_thief_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b88c651-b6b0-4e13-b41a-6d3e99bfd45d/tipujonugozizuxu.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_off0000f266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF266 5440 bytes
SHA-256: e77ea51f11a872050a550ee5e84c0ee5741005515beae6a17271e7d602473a5a
font_01_sfnt_off000104c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C3 11312 bytes
SHA-256: c6489eef1e636ac869428c4aff6feb02777ef5e4bd1575cc4b3441946fe9dd7a