Malicious PDF — malware analysis report

Static analysis result for SHA-256 090b0bc5390fcc68…

MALICIOUS

PDF

74.7 KB Created: 2021-02-17 00:31:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 93301a20c7f7f974a06f193eccc0c359 SHA-1: aa9f9b0d5b757056dec67ebabc5690df3ad4b077 SHA-256: 090b0bc5390fcc689329be8e51fef7aa44e8546701dea922394b9f9c4c9806d8
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to a 'Dyson animal stick vacuum best price' and redirects to a suspicious URL, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, likely leveraging a known exploit or social engineering to deliver a payload.

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
  • 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://jacksth.ru/strik?utm_term=dyson+animal+stick+vacuum+best+price PDF link annotation
    • http://kekemubitaf.iblogger.org/cracked_apk_store_ios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497093/normal_6003330aa40e6.pdfIn PDF document text
    • https://cdn.sqhk.co/govizanorev/ge36Whi/boku_no_hero_quiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369640/normal_5fedd57eb3698.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446287/normal_6002d1445d1fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408481/normal_6023c6e4b1384.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408865/normal_600059057fae4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387060/normal_5feaefeca8a4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370996/normal_60298bdb22be0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426556/normal_5fec4f41e94a4.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovusig/QhbLhb0/skater_girl_aesthetic_outfits.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387424/normal_6007319c622d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://melaworogafema.epizy.com/ice_sheet_vs_glacier.pdfIn PDF document text
    • http://tujefozumuresul.epizy.com/48235622876.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

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_off0000e6e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E8 5444 bytes
SHA-256: d61152990bec2e2e1185ae121be28b130993cbcbd21f09ed30f8ad10eca17b8b
font_01_sfnt_off0000f96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96A 10616 bytes
SHA-256: 09b76b0a7cf5771b2502dd6b01808f12d4fc10084c252d1effc41767d37d447a

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