Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e240727311470b…

MALICIOUS

PDF

76.6 KB Created: 2020-11-21 00:00:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e7d082ba4917f80d051bc6e3dde5893d SHA-1: e0a0c873a8d985264649b5752bd1459523b7b6e4 SHA-256: 05e240727311470ba471bccdf18336812d85b921212779742a2c6736efb03ebd
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a heuristic indicating it is a phishing lure, redirecting users to an external URL. The ML classifier and ClamAV detection strongly support its malicious nature. The embedded URL is likely part of a phishing campaign aiming to trick users into downloading malicious content or providing sensitive information.

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://traffset.ru/123?utm_term=covergirl+target+audience PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378604/normal_5f94b5a82949e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426682/normal_5fa5299599340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f872c7f9f41c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371003/normal_5f90b3afe9cc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_5f8f2b908bb42.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387054/normal_5fb83c7103246.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/78792078-2c2f-4444-8aca-77a41e85830d/fuvedaregakekogemujepet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/603aaf36-7f49-4b02-904b-bdb2899a7b89/loxubelufisove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/887769b6-df27-4c24-8cf0-a2e36042bdb0/akh_lad_jave_mp3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/146ae10b-388a-4774-836e-b26107652c35/dilizotibovanufarimi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26091856-1aac-42f2-9134-d088dd03a0c1/7056361229.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee363d0-99f9-44d0-bb47-ca199a5589b4/22937185007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe3d93c-ebc1-4a5f-bd40-ed7237ace8db/30456884159.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 2

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_off0000eedc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDC 4896 bytes
SHA-256: de5b26c08d8d0e9928bf4a3264bf4a645988d5c5628b5f02011b12f14f7d7072
font_01_sfnt_off0000ff98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF98 11112 bytes
SHA-256: aa6ccdada01d3e806b29a546fc61163713cfcd25b83e32a74d0730b7dd9c6059

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