Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02142faaa4f7e9a…

MALICIOUS

PDF

98.9 KB Created: 2021-06-05 07:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4dde6e06cf02c7cd81568f3badbcae28 SHA-1: 15d493cd5cfa6b04a359802dbca6b026318e0b53 SHA-256: d02142faaa4f7e9ac29f58f8340d6dc77c0cbd339f4c727182cd5eb9c1ebae57
76 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, identified as a potential phishing lure for free downloads. The ML classifier strongly indicates maliciousness. While no scripts were directly extracted, the presence of an external URI and a redirector suggests an attempt to lead the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://garglob.ru/pbw?utm_term=calculus+1+worksheet+8+limits+and+continuity+test PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426815/normal_6049a8588bae2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5fd63fcd20057.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476924/normal_5fda5768bbfd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390071/normal_6028ec9dca2ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489593/normal_6007b6643e364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476446/normal_60ba36415d2ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368471/normal_601f32ea5959c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413004/normal_600ca83e6bc7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460232/normal_604e7a83e646f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407983/normal_60b973d615ceb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387244/normal_5ff9bf25052aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369499/normal_5fd733df87c88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467030/normal_60416a4d5c7b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471230/normal_5ffff6cbddfb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467560/normal_601f1878c6d57.pdfIn PDF document text
    • http://www.chaoticgolf.com/calcnotecard.htmlIn 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/78e3e42d-6330-41a9-ad0f-dc8cc5605d32/how_to_use_insta_saver_on_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/286acc36-e0d5-466f-9b56-fc9a100a7cd2/kirkland_hearing_aids_apple_watch.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8719db88-31f5-42a2-b78b-1a7bc0226d5f/integrate_cos_x_sin2x.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22982303-3cd9-4c75-a041-8706ceb05043/damon_vampire_diaries_actor_real_name.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000124b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B1 5588 bytes
SHA-256: 9602318de38017da3a8bc073dbcebe58e740430222b5d53ba83ec8145e7b8c97
font_01_sfnt_off00013797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13797 14484 bytes
SHA-256: b115b276f0c62b1d7653776287792e43a4203f9fba20fdf2b5fdba376c47f4c2
font_02_sfnt_off00016714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16714 16564 bytes
SHA-256: f69dc9cb4dc18aa04b4e2ce2327c569224d63cfb6bbb9c17c33ccf00e3a05cad

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