Malicious PDF — malware analysis report

Static analysis result for SHA-256 da35b51925bd8dd0…

MALICIOUS

PDF

76.4 KB Created: 2021-03-02 23:50:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fbdc038fd07125e1085b6db0d2ce009c SHA-1: fcf5b4a02fd133c3061009bba7a35b618b9618b1 SHA-256: da35b51925bd8dd0a42e03be23ce0f19b623c570cc67e80a4710712a5ed78fa0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/123?utm_term=what+was+martin+luther+king+i+have+a+dream+speech+about PDF link annotation
    • https://cdn.sqhk.co/vikaxokaso/gjQihjd/cubic_street_boxing_3d_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421207/normal_5fd280879b1c3.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/iiQZggy/gogukete.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388173/normal_5fefde84d1a6f.pdfIn PDF document text
    • http://worodariravo.22web.org/demowedozo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465389/normal_6003ecf117ec0.pdfIn PDF document text
    • http://gutufozif.iblogger.org/bts_idol_free_video.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gajiresidar.epizy.com/dafisatibifipixenigafewum.pdfIn PDF document text
    • http://moxowofabijis.epizy.com/xinudogipagerazobajevebej.pdfIn PDF document text
    • http://bidasumibave.epizy.com/lotozonuriropanegiwadat.pdfIn PDF document text
    • http://tabetoge.rf.gd/zepulen.pdfIn PDF document text
    • http://wuzugimekiwetad.epizy.com/nivakelifibutavifaweto.pdfIn PDF document text
    • http://mefowoweman.epizy.com/robomaketifowapizasojimen.pdfIn PDF document text
    • http://zanevijid.epizy.com/43232134576.pdfIn PDF document text
    • http://zekumom.epizy.com/sheet_pan_chicken_thighs_and_red_potatoes.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_off0000ec4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4A 5856 bytes
SHA-256: b923c421bd746d584c8dbcafbcd694298c4924963ae7effcf04df016899f347b
font_01_sfnt_off00010023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10023 10708 bytes
SHA-256: 99ce82703ef990d3692242638192a245d9eac2ed9db4ba3d37599a55559f9ddd