Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2dbb8537a095840…

MALICIOUS

PDF

74.6 KB Created: 2021-02-27 02:29:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: c887241736e626d223672ab7b204e8e9 SHA-1: f5279deffbefe67945de91a3bdc09488732db39b SHA-256: a2dbb8537a095840e602bd2060cf4bf9b67d2eaa4539058e86c1b856052415d6
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/award?keyword=model+3+long+range+vs+performance In PDF document text
    • http://info-pages.ru/solijelocfu7x.pdfIn PDF document text
    • https://cdn.sqhk.co/gesafafo/ib3ihiA/xitudikijemonemadimupugab.pdfIn PDF document text
    • https://fejufawos.weebly.com/uploads/1/3/4/3/134328201/gikiwuxobijutok_vezomujux_minadoxof.pdfIn PDF document text
    • https://cdn.sqhk.co/majumoros/PiiTmqY/titepenumudetamola.pdfIn PDF document text
    • https://tiruzezisuwef.weebly.com/uploads/1/3/4/4/134499189/lifunud.pdfIn PDF document text
    • http://ukranews.icu/technical_analysis_stocks_courseraym2zk.pdfIn PDF document text
    • http://nefritthebestthing.site/tiny_bird_garden_deluxe_free_downloadweedm.pdfIn PDF document text
    • https://xewulatejema.weebly.com/uploads/1/3/5/3/135345986/vuvenozigisu-navewunopomu.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/Mpzhahc/legendary_mini_warriors_1._4_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/nenuguvan/iaiahhh/58469312903.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/68050260105.pdfIn PDF document text
    • http://speak4pro.com/27549562476rze8v.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/7mwieCH/41628158254.pdfIn PDF document text
    • http://sparzha.club/83169495940sqzq7.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/dBheqgg/wogajawofukifubupozes.pdfIn PDF document text
    • https://sovejugi.weebly.com/uploads/1/3/4/6/134652237/xenabukux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gupizamowakop.myartsonline.com/borozepajudo.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/philosophy_of_science.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61B 5704 bytes
SHA-256: 764560abe15390c53d002a09215f72057091cf0b19fca54e1965a42a37b37625
font_01_sfnt_off0000f991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF991 10428 bytes
SHA-256: 20a670fde4e72b35058aaa966eaf8badfa97e521fe52082c9d9db9b24c08ab75

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