Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae54de9aa7c7f159…

MALICIOUS

PDF

64.7 KB Created: 2021-02-15 21:42:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2e54d8e226f39fafcf230a2db709c278 SHA-1: 0b1388f0a80ee3511cafb4da4f2a7e633c614736 SHA-256: ae54de9aa7c7f15983286453f3aa1016686310b947460291c59088228cdbf6cd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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/123?utm_term=lightning+thief+official+book+trailer In PDF document text
    • http://ayazshabutdinov.club/dapomepimokafl06sf.pdfIn PDF document text
    • http://drenajkrasnodar.ru/bawujivosizawefegupoflqjgf.pdfIn PDF document text
    • https://vorupegesozuzow.weebly.com/uploads/1/3/1/4/131453293/9992812.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444366/normal_6008bfa6cac77.pdfIn PDF document text
    • http://vonurejawata.iblogger.org/28027924355.pdfIn PDF document text
    • http://streamsweets.com/kukexagugametamarulogefoglj59.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390330/normal_6017625486f71.pdfIn PDF document text
    • http://zuvels.xyz/biography_hollywood_movies_free4bxla.pdfIn PDF document text
    • http://mxbur.fun/get_landscape_or_portrait_android8zn6h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sekusasumoda.rf.gd/templates_and_inheritance_in_c_ppt.pdfIn PDF document text
    • http://savexopuzasi.epizy.com/gesurinij.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/53330986527.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/35775122104.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/basic_instinct_the_acid.pdfIn PDF document text
    • http://pibunowawoxi.epizy.com/how_to_fix_sheetrock_corner_cracks.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_off0000bdd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD0 5108 bytes
SHA-256: f029c03223e5d22c98d3fb31af776aa9dc7d79b8bf3b4a74762a8fdad19cf301
font_01_sfnt_off0000cf40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF40 10840 bytes
SHA-256: 3f9952d4c32c690d46a5f50be882fa5a26672d7ec951e0fed8d69b1ccb621c04