Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ad4a70d4bf60a5…

MALICIOUS

PDF

60.4 KB Created: 2020-11-09 08:55:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ba07fc6320b298fe7e9620e2e78cfdb3 SHA-1: a7ba5db9d52ec4a4075c841d8ef75c3e2dd269fe SHA-256: 84ad4a70d4bf60a5eb5afa7e32d9cbdc2727cf3f426d289c00091de07d5e2f53
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains an embedded URL that functions as an SEO redirector, specifically designed to lure users with a 'free download' pretext. The ML classifier strongly indicates maliciousness, and the presence of external URIs points towards a phishing or malware distribution attempt. No scripts were extracted, but the overall structure suggests a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/123?keyword=free+rubies+for+hidden+city PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444877/normal_5fa15e0ec39f7.pdfIn PDF document text
    • https://gatixitawenubik.weebly.com/uploads/1/3/4/6/134643062/4857747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475995/normal_5fa5fce612f46.pdfIn PDF document text
    • https://gowosupene.weebly.com/uploads/1/3/4/4/134489802/53d89a5335bf3bb.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/japigavis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482860/normal_5fa82ac96f428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371786/normal_5f97a4bc85072.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388157/normal_5f8e6b9fbe408.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460263/normal_5fa24c9b11e95.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://tibepitetuj.files.wordpress.com/2020/11/49301406681.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000a7f4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA7F4 26496 bytes
SHA-256: af3b69db3c784e6a7d550677fdbb9159fdf27e3782187e0682d79c78296f362f
font_00_sfnt_off000067cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CB 4944 bytes
SHA-256: 0758fcc156f674ebf59b291d72c1281832e39b7953e42a1ca5d730a68aa3ced0
font_01_sfnt_off0000788c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 1796 bytes
SHA-256: c9c850e9c351ce199d5e9d1c42a783cd39d33267a74ccb43d8a2fed304f07254
font_02_sfnt_off00008117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8117 11340 bytes
SHA-256: 80a5f659fc2b6db92a0c61197b508c6c05d41202f8760517f78878a3954922a1
font_04_sfnt_off0000d4b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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