Malicious PDF — malware analysis report

Static analysis result for SHA-256 a184ac48b9def257…

MALICIOUS

PDF

90.8 KB Created: 2020-12-14 04:57:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 116969703f8d383e1a5603115ac9e344 SHA-1: 9af08576aa8ece7517f3c2b0b61607e3ed2b70f6 SHA-256: a184ac48b9def2579e9c1a05f62e029336a919adefb0f6eeb860ef7f0355ff6f
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, many of which are part of an SEO link farm designed to redirect users. One prominent URL, 'https://trafffe.ru/aws?utm_term=hazardous+waste+report+management+method+code+h141', is identified as a redirector, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan 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://trafffe.ru/aws?utm_term=hazardous+waste+report+management+method+code+h141 PDF link annotation
    • https://jewajufigojoxi.weebly.com/uploads/1/3/1/4/131438211/fa36b8459e4569d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379605/normal_5fb2886752884.pdfIn PDF document text
    • https://ralunudedosamot.weebly.com/uploads/1/3/4/8/134856058/a649e82ace.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/79d5d28f-7818-4b10-98be-4ce2452d8924/35485233031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e943ce7e-8cd1-4334-b04d-563d621c86e6/19097538056.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51bf8c6d96458363d4b13/t/5fd16a55ad61ab58317e536b/1607559769070/free_download_video_tik_tok_lucu.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/crescent_city_classic_training_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc007006609fd0ee78c7004/t/5fc43d5df3de5e49b5eb3573/1606696287180/holt_spanish_2_workbook_answers_cuaderno_de_actividades.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51642239b0722914c4266/t/5fc8e1c6094cf7617dcba8fc/1607000521955/3d_heart_hd_images_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33ed640f1034a5cb81b15/t/5fcc184c3ff1011540dfc655/1607211084516/wenuduwofe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1343bd26ff1194f75a191/t/5fcea555cc997a768f5a026f/1607378261813/nisarifadezodusaniwof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bff8d9eb-8c55-46b2-ab6e-b607853fb347/vojirokezirinenol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/761f8ae5-01eb-45b6-b6e5-cbeb0eabe5f0/que_es_volumen_en_quimica_definicion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c79c22dc-6e6e-47a7-ba9f-59039be9c038/find_your_wings_lyrics.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125DA 5696 bytes
SHA-256: 2ab2ff0b41866830233bfd44ff2b9bfad126e4a615f70b473f1ace28c3b0ea66
font_01_sfnt_off00013938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13938 10824 bytes
SHA-256: 907861f2ef8c23b83b1ce7baa90301e19b460d0e2d52458fba0955e34c652c31

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