Malicious PDF — malware analysis report

Static analysis result for SHA-256 32925206a3f97f95…

MALICIOUS

PDF

51.9 KB Created: 2020-11-06 09:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 227448ff6d66b0117d4dc745bd450f40 SHA-1: 4298e1bcdc2e6cc43d379defacb6934e3a46c9bf SHA-256: 32925206a3f97f95553ac02691eb9ab87bd1aba8c89d40ab423aea8fb07bfc97
134 Risk Score

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://traffking.ru/strik?keyword=cms+reporting+due In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5fa227b95df28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386605/normal_5f934c7508f2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f8c6097f24a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369308/normal_5f8ba7034ea54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5f9dc84b6d978.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://uploads.strikinglycdn.com/files/52122a41-415d-43a0-b010-a16833e856fa/61685836602.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/alejandro_chaban_diet_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/atmosphere_web_quest_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/texifaxepag/52404477700.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/74868535471.pdfIn PDF document text
    • https://s3.amazonaws.com/texifaxepag/70480209394.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/symphonized_headphones_manual.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D85 4940 bytes
SHA-256: 8467ced3949fa00f6accf2a6deee651c9c89812c03860e0e788a99a8109a3b6e
font_01_sfnt_off00008e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E3A 11284 bytes
SHA-256: 31ca748aaecdaad53cc7743812058e4bf5170780c587d8e81047be700de94a2b
font_02_sfnt_off0000b493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB493 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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