Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc5637e15863648…

MALICIOUS

PDF

67.9 KB Created: 2021-02-20 21:48:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4afc07bd461f5b0e690175c803ca4eba SHA-1: 0ad8a3bfbed6e6a0b802404a9844758816645278 SHA-256: 7bc5637e1586364850ca73f4583a5393d4108c4b67e34da2354e802eb7ad8ade
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://maypoin.ru/aws?utm_term=what+happened+to+the+first+90+days+app PDF link annotation
    • https://cdn.sqhk.co/nafumozuwe/hh3igja/factory_simulator_wiki.pdfIn PDF document text
    • http://spainwow.pro/65045847454a29dy.pdfIn PDF document text
    • https://ziropiwos.weebly.com/uploads/1/3/4/3/134311351/danarukagukagud.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/3uhiuDs/12391037989.pdfIn PDF document text
    • https://rerofijujujedo.weebly.com/uploads/1/3/1/8/131872137/ac882e3696f.pdfIn PDF document text
    • http://brumbum2.xyz/davuvokabanuseod3is.pdfIn PDF document text
    • https://vefamomapebimid.weebly.com/uploads/1/3/1/4/131406391/dewomaf_tunuvufanix.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuxopova/SVYFhio/baby_yoda_name.pdfIn PDF document text
    • https://cdn.sqhk.co/sinupupuzaxa/Yicb73v/41181876286.pdfIn PDF document text
    • http://negurosivaz.iblogger.org/bloomington_2010_full_movie_free.pdfIn PDF document text
    • https://cdn.sqhk.co/kixobaza/jiC1VHb/58641080196.pdfIn PDF document text
    • https://cdn.sqhk.co/wepunajexiju/jgjig8L/96951741856.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xalasawu/56163243424.pdfIn PDF document text
    • http://dumatefofexulen.epizy.com/zktime5._0_attendance_management_system.pdfIn PDF document text
    • http://rinubef.epizy.com/composition_book_cover_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_off0000cdab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDAB 5512 bytes
SHA-256: 00d484716e1438befc3c14af1e6dd38da2fa5714b1b6eeb407e660c7884e7c7a
font_01_sfnt_off0000e079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE079 10056 bytes
SHA-256: d356a3883c755239b697896813d97660df6f3fec32928f26e9fa8edc6b97f324