Malicious PDF — malware analysis report

Static analysis result for SHA-256 bca11691be91604a…

MALICIOUS

PDF

71.4 KB Created: 2021-02-06 15:09:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3d5002f5f8ce203d91d015f8bba177c6 SHA-1: 7ae513ad1cd45f7a03035081f8ef6d18c706d11f SHA-256: bca11691be91604a7347929206498151a20cb1cc9182e56425d7afa3f66140f6
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/123?utm_term=2015+wrx+wheel+fitment+guide PDF link annotation
    • http://reestr.site/nikejumisojupc3pj.pdfIn PDF document text
    • https://xopoloxunevagig.weebly.com/uploads/1/3/1/4/131406528/vimazamag_zilisokesuri_xuxufu_gatibotitutised.pdfIn PDF document text
    • http://yourbigdick.space/dixupojixozadokilgrjw.pdfIn PDF document text
    • https://lepatoketi.weebly.com/uploads/1/3/4/7/134732542/wepipufa-lizujedusule-wogaka.pdfIn PDF document text
    • http://trend-sales.fun/42847513272jnpnc.pdfIn PDF document text
    • https://badosesidexezub.weebly.com/uploads/1/3/0/8/130874160/8ded370b925b.pdfIn PDF document text
    • http://foruzakitotilut.iblogger.org/wapaserasumusezexizidudab.pdfIn PDF document text
    • https://mewifukemi.weebly.com/uploads/1/3/4/7/134764424/1c69ea1f3.pdfIn PDF document text
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/milegedik.pdfIn PDF document text
    • https://zipatusuf.weebly.com/uploads/1/3/4/0/134012633/9379971.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dolufin.epizy.com/dream_girl_kannada_movie_songs.pdfIn PDF document text
    • http://poresiz.epizy.com/rt_duroid_5870_datasheet.pdfIn PDF document text
    • http://magikid.epizy.com/50785883062.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/vakabok.pdfIn PDF document text
    • http://vujipuxi.epizy.com/solidworks_2017_student_version.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_off0000d978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD978 5448 bytes
SHA-256: 4712e1e6de510445f1b26934878821148ec68ed322977efe1f928783d117ea85
font_01_sfnt_off0000ebfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFB 11236 bytes
SHA-256: 8cfe3365c7a170a96ecd40f14881e872e08a0f2c7633429cc6cf33fc0c7b18b8