Malicious PDF — malware analysis report

Static analysis result for SHA-256 e432d018d1df7852…

MALICIOUS

PDF

70.5 KB Created: 2021-03-23 02:49:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c39ecc39b253df79dba2e403f02293fd SHA-1: e63977777ff8aabb1571d93c9e5d44affaf08d7e SHA-256: e432d018d1df7852fe5263da2e509250031425f1a172991308e754c8d49b2035
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many of which point to disposable domains and are used in a link farm, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://bologen.ru/123?utm_term=placement+test+b2+with+answers PDF link annotation
    • http://ketibenugato.22web.org/the_ministers_black_veil_quotes_analysis.pdfIn PDF document text
    • http://alluniversity.fun/what_is_high-concept_fictionc198k.pdfIn PDF document text
    • http://kopalirigel.mypressonline.com/budav.pdfIn PDF document text
    • http://select-get.top/jane_austen_movies_bbci09eb.pdfIn PDF document text
    • http://bexukavinawexov.mygamesonline.org/junidefapa.pdfIn PDF document text
    • http://wersita.space/52944029419mxtdr.pdfIn PDF document text
    • http://tiktokfrance.fun/tubezuxojexusiriz58o88.pdfIn PDF document text
    • http://garantiya62.ru/doce_cuentos_peregrinos_resumen_por_capitulos8xmaz.pdfIn PDF document text
    • http://dominis.xyz/taditarizol2vcvn.pdfIn PDF document text
    • http://amandeepsadyora.com/how_to_use_a_cricut_expression_machinexo1bc.pdfIn PDF document text
    • http://bathforlegs.xyz/volkswagen_passat_1995_repair_manualhkra7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8790d1be-c1eb-4d84-b263-3a9e75bb1e51/rifafotuma.pdfIn PDF document text
    • http://janevowox.epizy.com/povuzumuwejilimete.pdfIn PDF document text
    • https://2559d30b-64cd-4b4d-aaad-e76a675dde99.filesusr.com/ugd/f5a024_1ba12d5b5d4743158f7ad1b478751df2.pdf?index=trueIn PDF document text
    • https://4bc473c2-84d0-4913-8b4e-281bf44fba2e.filesusr.com/ugd/a25dbd_5b78463d14dc4d32bfb3f92c70c9c982.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/749e195a-1f5b-490e-a591-1230e0103e29/what_happens_at_the_end_of_vampire_diaries_season_1.pdfIn PDF document text
    • https://1b3fde16-7575-45ba-b40e-8916c64185ca.filesusr.com/ugd/8874e8_114bc2225d3f4ca79c31d134153c5eb0.pdf?index=trueIn 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_off0000d589.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD589 5404 bytes
SHA-256: 8ad70e02a083a3aa21eb398099e22f008aa2d2b7ccf6b203e26f70e504a6ad49
font_01_sfnt_off0000e7d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D4 10940 bytes
SHA-256: 6616badb3f693c78c693ff0e116c296d28101ce44b4fc0223c6036511646bd55

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