Malicious PDF — malware analysis report

Static analysis result for SHA-256 79902a23c0962784…

MALICIOUS

PDF

84.1 KB Created: 2021-02-05 14:40:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f336f801197dfefca1eb6b8726e27e44 SHA-1: 2e95c87e3032a3a71628df0ac923274504b40651 SHA-256: 79902a23c0962784d01b940959e53fa5feaca97a9d5e43099e334fb6db0c9a81
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/aws?utm_term=advanced+cardiovascular+life+support+2015+pdf In PDF document text
    • https://cdn.sqhk.co/zimuteraf/T6RoghP/kekemawopebogisadaz.pdfIn PDF document text
    • https://rudabukonavapuk.weebly.com/uploads/1/3/4/0/134016662/928aec.pdfIn PDF document text
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/gufitupuvazapo-fatuzelu-guzima-lotusapiwanov.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/bjfgdFc/carmageddon_2_soundtrack.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371010/normal_5fc761cf8bdad.pdfIn PDF document text
    • https://vazanopika.weebly.com/uploads/1/3/4/8/134896022/zuxem-borumisekove-vukozobabefex.pdfIn PDF document text
    • https://cdn.sqhk.co/musutalivun/jea5gAQ/mozefebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417033/normal_60156cdb2c6e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529024/normal_6001429687d3e.pdfIn PDF document text
    • https://cdn.sqhk.co/zomidami/hwS7xgf/72454951438.pdfIn PDF document text
    • https://tusatetop.weebly.com/uploads/1/3/1/4/131408029/e7d257.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/jebupofedijakuk/83082150415.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/23435464372.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/kokoganevepugiriba.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/1st_grade_math_curriculum_printable_worksheets.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_off00010a25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A25 5648 bytes
SHA-256: 57f56ea893914a8b4459cea35976d2300f10c2f6dcf1934105a92486fbfe5dc9
font_01_sfnt_off00011d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D83 10504 bytes
SHA-256: a83f5aea1793a75e03d981a3ee3df6be812e5b39894e9e51bd2eb4d88f42694d

Open this report in the interactive analyzer, or submit your own file for analysis.