Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0c47f8769df763…

MALICIOUS

PDF

73.5 KB Created: 2021-02-21 05:58:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1a2ae825a9719eacffc567da84da98bb SHA-1: 3ecfd39c9cee6d99b3754643cd9d5d8a1b8221bb SHA-256: 4a0c47f8769df763135e4535b4bc3231d8f693cca3115fddd6886a7649d02994
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a deceptive title related to Honda radio codes, which redirects to a link farm. This pattern is indicative of phishing or scamming operations. The presence of numerous external URLs and the ML classifier's high confidence score support this assessment. No scripts were extracted, but the PDF structure and embedded URLs suggest an attempt to redirect users to malicious 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://seumenha.ru/123?utm_term=how+do+i+get+the+radio+code+for+my+honda+canada PDF link annotation
    • http://nuzanav.22web.org/tumuxutelenarozufak.pdfIn PDF document text
    • http://extrameets.fun/como_rezar_rosario_para_difuntosxe4mm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478933/normal_601da0ec56ba7.pdfIn PDF document text
    • http://kernig.store/266621086411ouhi.pdfIn PDF document text
    • http://doucheop.xyz/xesupu7hotn.pdfIn PDF document text
    • http://best-ital.fun/idioms_dictionary_english_to_urdu0m6b0.pdfIn PDF document text
    • https://sunarikibuniteg.weebly.com/uploads/1/3/1/3/131381519/88136.pdfIn PDF document text
    • http://tixshopclub.fun/matukarizikujf6jkt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449629/normal_6031962fdfe5e.pdfIn PDF document text
    • http://guitar.su/how_to_check_formula_in_google_sheets3t3z7.pdfIn PDF document text
    • http://naturebiolog.fun/vigowakimt6mp.pdfIn PDF document text
    • http://jinosewifuwefe.22web.org/xelapivikalep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499283/normal_5ff55a5fd9ca8.pdfIn PDF document text
    • http://doporujela.iblogger.org/88939087468.pdfIn PDF document text
    • http://talebakela.iblogger.org/picsart_apps_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374185/normal_602fe52e7f1ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417214/normal_601673874894b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 5168 bytes
SHA-256: d32d8d48b5c6aeffe451ac06042a9c1e62f0eafd10ab30d68e010eeeba527d9e
font_01_sfnt_off0000e4f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4F0 11028 bytes
SHA-256: a21aa3daa13b14114031f690f37a3e088447b2feaa39fa2d82121f7eddf52aaa
font_02_sfnt_off00010a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A30 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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