Malicious PDF — malware analysis report

Static analysis result for SHA-256 541a21446893819c…

MALICIOUS

PDF

70.3 KB Created: 2021-02-17 23:26:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9a822bce430d71067c8173b13aa84bce SHA-1: 046f1d0a61f30b0d492bf4bc5646d1a7bae38ffa SHA-256: 541a21446893819cd84918d445e0834e94efcb12c44909aea70ba67ea768bce6
186 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
  • 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=rhetorical+devices+in+the+book+into+the+wild PDF link annotation
    • https://teveluzisobe.weebly.com/uploads/1/3/5/2/135299025/zifor.pdfIn PDF document text
    • https://nolobatunu.weebly.com/uploads/1/3/0/7/130740420/7702228.pdfIn PDF document text
    • http://urro-hu.com/941080411644bceo.pdfIn PDF document text
    • http://ch-redirect.icu/jinja_template_set_variablea3pyk.pdfIn PDF document text
    • https://josebugovoje.weebly.com/uploads/1/3/0/7/130738719/jobexubozidagog.pdfIn PDF document text
    • http://gemobaraza.iblogger.org/49125048667.pdfIn PDF document text
    • https://jodegometokak.weebly.com/uploads/1/3/1/6/131606115/8420907.pdfIn PDF document text
    • https://dafizigupiteg.weebly.com/uploads/1/3/4/4/134492389/fasakalarejeluxa.pdfIn PDF document text
    • http://nagonakog.22web.org/higher_secondary_march_2019_answer_key.pdfIn PDF document text
    • https://ginadilu.weebly.com/uploads/1/3/4/7/134768391/7594058.pdfIn PDF document text
    • http://life-news.tech/21_cfr_part_10_and_11zoccn.pdfIn PDF document text
    • https://sadavofabuloxus.weebly.com/uploads/1/3/5/3/135316226/2357211.pdfIn PDF document text
    • http://stnold.com/synonyms_meaning_in_englishd9m8f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fudotebu.epizy.com/video_player_hd_terbaik_android.pdfIn PDF document text
    • http://palalujopaxuv.epizy.com/gowakizixifibifelamegiloj.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_off0000d6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C0 5388 bytes
SHA-256: ae53f839a98a73ebdd693616f0a1f5ead5ab107f28d754357063b35dc6dd2991
font_01_sfnt_off0000e921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE921 10160 bytes
SHA-256: e993b9155fb83e7067a0068755b6b21fa54fb1e5ce6517f14f6aa145ced89815