Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bab0b93cd6c35c8…

MALICIOUS

PDF

72.7 KB Created: 2021-02-11 17:10:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2a17ee7b9eb43406265d8ea38648d82a SHA-1: e9d28a621126d49b0769ad9eca4026332e5074eb SHA-256: 7bab0b93cd6c35c8ef11c1f0984d8c7f70ac9e5bb9ae7233cbe3cebe3e4e7025
186 Risk Score

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://jacksth.ru/wix?keyword=a+midsummer+night%2527s+dream+questions+and+answers+act+1+scene+2 PDF link annotation
    • https://cdn.sqhk.co/kezixowog/KcjaDjb/fake_call_screen_generator.pdfIn PDF document text
    • https://fulimutalez.weebly.com/uploads/1/3/4/5/134599943/9640172.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415327/normal_5feb689a82b89.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/igdhfAu/81483087785.pdfIn PDF document text
    • http://fepemewavitik.66ghz.com/rarotozeginipitojeb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392649/normal_602307932d375.pdfIn PDF document text
    • https://kegewibenufugix.weebly.com/uploads/1/3/2/6/132682471/653f3b16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446776/normal_60045c087b1e9.pdfIn PDF document text
    • https://gajodiwu.weebly.com/uploads/1/3/4/0/134042407/6063093.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387920/normal_5fd615fb7e1e6.pdfIn PDF document text
    • https://tobejisexin.weebly.com/uploads/1/3/1/4/131454505/cea77a275.pdfIn PDF document text
    • https://kekorozonositen.weebly.com/uploads/1/3/2/7/132710750/4fe3aefc.pdfIn PDF document text
    • http://zesijesagevonot.22web.org/99346191093.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://desetezovadu.epizy.com/pizixuvovunabatikupud.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/amelia_bedelia_online.pdfIn PDF document text
    • http://faxumev.epizy.com/fbi_crime_statistics_2018.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_off0000deb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB2 5744 bytes
SHA-256: a6975a6012d48a13c2da3bc905dfb2b845fdac05e7d2afdac2ed42849b2c97e1
font_01_sfnt_off0000f22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22A 10372 bytes
SHA-256: 3ad2a115856a1e0a556958a88495b78ff6aa9088c72aa6fe35d9e07c4a3ebecc