Malicious PDF — malware analysis report

Static analysis result for SHA-256 e06ed750a8e1bf26…

MALICIOUS

PDF

38.3 KB Created: 2020-11-04 21:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c01b612a84562f47f7b27859010811e6 SHA-1: e3224505b95bd97e5665eca000732e340a529fd7 SHA-256: e06ed750a8e1bf2682b2f28212f066734b00421e34128825f8ee373a1ec0e8f4
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to the URL https://ggtraff.ru/strik?keyword=uw+marching+band+spring+concert+2020. Heuristics indicate this is a malicious redirector, likely used as part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains references to this URL and other PDF files, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://ggtraff.ru/strik?keyword=uw+marching+band+spring+concert+2020 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379959/normal_5f9fb5d073e66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367911/normal_5f8f3a53b00dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406464/normal_5fa25563af2a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411245/normal_5f988bb6b118c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386363/normal_5f8cb2875ec65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5f8b2d9c7a862.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/xizowapewipilaxat.pdfIn PDF document text
    • https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/vonemisakexexim_kufagibopolinu.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/babff3e1-4236-4096-a6d1-f1861b3f3a4c/31477294334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9776b9e0-00bf-49d7-bdbd-ef74cc5bd9ce/traktor_pro_2_download_full_version.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5955f48-2fc6-4a76-a1ea-7db2f11333bc/43077281567.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bbe6a97-2066-4119-b9f4-73e0baa591a8/titidefemok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12ff367a-9296-49e5-a0fe-9edff40acaea/vetawilu.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 6

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_off000054a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54A7 5952 bytes
SHA-256: c28a118cb66cccd5ef3ee87c1260555dfe6d5c0d57fd1242fae3aaf4d7c5c7a1
font_01_sfnt_off000068c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C7 10580 bytes
SHA-256: 769dbc800fd85bf05d9eac04b0e7613861ef19732f0f16ec499614c78ea2ea05

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