Malicious PDF — malware analysis report

Static analysis result for SHA-256 54262efa0864bea2…

MALICIOUS

PDF

80.3 KB Created: 2021-02-20 19:13:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 93f7bc5461b9c75916542b7885b9e4dc SHA-1: 33bf9de0cbad77411a6a60780be23cc8300d3b9e SHA-256: 54262efa0864bea2e3b128b28b80037d4051a6d9075de1771f4bbfefc35c562a
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many of which point to SEO-optimized URLs designed to lure victims. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and 'PDF_SEO_UTM_REDIRECTOR_LINK' specifically flags an image lure linking to a redirector. While no scripts were explicitly extracted, the PDF structure and link farm suggest a phishing or scam campaign, likely using embedded JavaScript for redirection or further payload delivery.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/wix?keyword=carson+city+crystal+high+school+wrestling PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480897/normal_5fef8131a8fcb.pdfIn PDF document text
    • http://testertumentum.space/tekuvamowikagafixfac4z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367680/normal_5fe49fb9ce2c8.pdfIn PDF document text
    • http://creditpm.com/guide_for_free_fire_official_tipscux4w.pdfIn PDF document text
    • https://mibirewisurux.weebly.com/uploads/1/3/5/3/135313447/dadezopur.pdfIn PDF document text
    • http://biweekamnf.com/manual_for_maytag_bravos_xl_dryer1ewfq.pdfIn PDF document text
    • http://custits.space/chevy_malibu_2005_lt_tire_size5tdus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410013/normal_5fcd277b83956.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481994/normal_602e75770a67f.pdfIn PDF document text
    • https://pefizisiguxuv.weebly.com/uploads/1/3/1/4/131438819/zifezutowoxogiw.pdfIn PDF document text
    • http://life-news.tech/23412866001vmmwn.pdfIn PDF document text
    • http://instapriz24.online/83986994147cistz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453906/normal_60159b1a073a7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418184/normal_600049eeb14f9.pdfIn PDF document text
    • http://worldthailand.fun/30148173451veem1.pdfIn PDF document text
    • http://eslivdrug.space/financial_reporting_standards_nzrlur5.pdfIn PDF document text
    • https://ccceagles.comIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD38 5160 bytes
SHA-256: 9c57706d1a89e9762ccceb30b415ba83e63017ccd62c9cdc880e1a02e5bf3905
font_01_sfnt_off00010ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ECC 10768 bytes
SHA-256: 994237de5baf69751dcaac488f0f8fabf04d8ffc2277cf7722996b3a5f0ce180

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