Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f4b4c5f3620beb9…

MALICIOUS

PDF

105.7 KB Created: 2021-02-24 21:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2b8db88477106c202e62d37363035c93 SHA-1: 089c20d4335dd47f253c23de8380c6e0b30a7c71 SHA-256: 6f4b4c5f3620beb96a31b621bec145b32b7ae4d210139a75f3e2b747ed2e5f39
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly indicated maliciousness. The embedded URL is likely intended to lead the user to a phishing or malware download site, disguised as a legitimate resource.

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
  • 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.
  • 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.
  • 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://yafferge.ru/123?utm_term=can+you+be+a+drill+sergeant+as+an+e5 In PDF document text
    • https://zovezeko.weebly.com/uploads/1/3/4/6/134697242/05eed18e9b9.pdfIn PDF document text
    • https://cdn.sqhk.co/rapaxino/Digjqge/quadcopter_fx_simulator_windows.pdfIn PDF document text
    • http://mosquito.codes/jefabuxorovefitwrv9k.pdfIn PDF document text
    • http://lienforkid.com/27430891550a3bcl.pdfIn PDF document text
    • http://design-kvartira.info/89080461679aan6v.pdfIn PDF document text
    • https://cdn.sqhk.co/sugumujozik/jlhgvDK/29305745354.pdfIn PDF document text
    • https://fukoxifixe.weebly.com/uploads/1/3/4/4/134460993/nifokos.pdfIn PDF document text
    • http://itawegan.space/spanish_present_tense_verb_conjugation_worksheetmfid7.pdfIn PDF document text
    • https://cdn.sqhk.co/dubikureta/iSc2eoi/16551133683.pdfIn PDF document text
    • http://espaceabonnes.com/sosijuxiwejaneluwufufaxiqyj4a.pdfIn PDF document text
    • https://seligelota.weebly.com/uploads/1/3/1/4/131453084/78006f57c46106.pdfIn PDF document text
    • http://parkingtest.xyz/826417406507ygpf.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosenijosu/hjjdMlY/pujugizesokezavoboxoxif.pdfIn PDF document text
    • http://profapp.pro/formaggio_bettelmatt_prezzo7pdhn.pdfIn PDF document text
    • http://biweekamnf.com/16409105738cb4us.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
    • https://s3.amazonaws.com/nosepevozux/diabetes_guideline_ada.pdfIn PDF document text
    • https://s3.amazonaws.com/jeponowon/32577136347.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/69557821792.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/83939128786.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15321 5264 bytes
SHA-256: 9f205cabe88a999424d0a3529467e2810c929289fa67a802f677f42f3c47b839
font_01_sfnt_off00016518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16518 11032 bytes
SHA-256: 77c4ac07b5bd03d324add46072675db2f0ac7f4419105f09d4b82792c543cbfb
font_02_sfnt_off00018ae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18AE8 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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