Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d4bdb5e8ca380bc…

MALICIOUS

PDF

77.9 KB Created: 2020-12-15 07:42:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 9802c9608dd44849517be5fb9d0bb213 SHA-1: 4d5211afc8c9ae411a7d20fb3c77fdfcd354a269 SHA-256: 9d4bdb5e8ca380bcfb137a0784393b91d29ab6a62e35546415664a5a7070ba64
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains embedded links that redirect to known malicious infrastructure, specifically identified as a redirector. The heuristic firings indicate that these links are used in a phishing context, likely to lure users into downloading further malicious content or visiting compromised sites. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cctraff.ru/123?utm_term=when+i+have+fears+that+i+may+cease+to+be In PDF document text
    • https://cdn-cms.f-static.net/uploads/4454824/normal_5fbefbc958f18.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/lorewuk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_5f9c63aed7ee9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f988c6ac380d.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/3919480.pdfIn PDF document text
    • https://kenuvibugitevam.weebly.com/uploads/1/3/4/7/134700053/5260890.pdfIn PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/45d49b.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/fotepopunaj/binen.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27abd116eb00e3c55ea17/t/5fcd65c3cded405bb8eb994b/1607296451603/35115230100.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/zamorawizumeri.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/konenegipogiki.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/xepobaxeterabeveradawebo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a17303f04e270fe5ae5c/t/5fc7fae36ff1704bbbc2f656/1606941411829/roblox_adopt_me_toys_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/golonexo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4DA 3712 bytes
SHA-256: 7b9f08f53125aa57d9596ec91ca8a2c35e5664edb0b5db680df914d6f0765977
font_01_sfnt_off0000e219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE219 5192 bytes
SHA-256: 62ea36bbdb73902e71b95a9b7dd2d6ccf26412a15456919bdef1183924ca8471
font_02_sfnt_off0000f39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39C 12036 bytes
SHA-256: 6c5ac7ccda0efeb8c72ceac13df5d790b0a0a7240b1a95ab413d7d07c2d1b0b2
font_03_sfnt_off00011a3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A3F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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