Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6bb11c74e7259ca…

MALICIOUS

PDF

85.0 KB Created: 2021-03-20 17:51:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 9a7d3a4772808be8ed1efee0339dcafa SHA-1: 27809b30ef1b39bea00486d498f127cb2e478cb5 SHA-256: c6bb11c74e7259ca8f87e61e89edf03c25f6885bd36f060985c93a5b4a0e6f3d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with a primary focus on a link that appears to be a search result for '1977 john deere 410 backhoe for sale', directing users to a suspicious domain. The PDF also functions as a link farm, increasing the likelihood of user interaction with malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://leonvi.ru/strik?utm_term=1977+john+deere+410+backhoe+for+sale PDF link annotation
    • http://fringigejy.site/20337550969ku6k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482230/normal_5fe245762d807.pdfIn PDF document text
    • http://hocostyle.ru/google_chrome_internet_manager_extension31u12.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475728/normal_5fe5991b98361.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/jgjghaS/93026203987.pdfIn PDF document text
    • http://ctyr.ru/44826162588czv7m.pdfIn PDF document text
    • https://viduxetejogat.weebly.com/uploads/1/3/4/6/134600114/f4a35319737865.pdfIn PDF document text
    • https://modulofironufi.weebly.com/uploads/1/3/4/4/134402713/18c63.pdfIn PDF document text
    • https://pagafamowadaf.weebly.com/uploads/1/3/4/8/134878907/segidid.pdfIn PDF document text
    • http://converstarget.ru/ikea_catalogue_2019_canadac6hi7.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/jeihYjc/zozinoruwumurov.pdfIn PDF document text
    • http://mowukedova.mypressonline.com/gewabujarajofusaboxovuvuk.pdfIn PDF document text
    • https://xikoroto.weebly.com/uploads/1/3/4/3/134338579/b81655.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekasip/jf69xJt/zutuzulifakoj.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/cPghbkd/fomimakakebidodeja.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxofidipo/japTzia/shipwreck_beads_seattle.pdfIn PDF document text
    • http://mnclassis.org/453480081499kncl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jotozig.rf.gd/learn_hindu_astrology_easily.pdfIn PDF document text
    • http://xofiketur.rf.gd/incident_reporting_form_example.pdfIn PDF document text
    • http://bozejezetides.epizy.com/lukubojegekudagokotuwi.pdfIn PDF document text
    • http://posikin.myartsonline.com/referat_orchitis.pdfIn PDF document text
    • http://wemazepiba.epizy.com/john_hopkins_antimicrobial_stewardship.pdfIn PDF document text
    • http://mamepekavileput.rf.gd/86811265908.pdfIn PDF document text
    • http://firiwigisu.atwebpages.com/lupulonagifufogok.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_off00010bc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC0 5812 bytes
SHA-256: cafb5c72a4a208f35768ef0088add5825d61f0b624875d2c343cd4957f81ba0e
font_01_sfnt_off00011f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8F 11436 bytes
SHA-256: ba3eddd42bd69b6356f955693a3fa1b44456d7b0bb489754c9eae156bc9df348

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