Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd849e8a935e19fc…

MALICIOUS

PDF

40.5 KB Created: 2020-09-20 09:46:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 825d4515bae18bec3738180742a99c6a SHA-1: 2b9b5337d9dc752ddf5cdcc3ad4b75ace216dac5 SHA-256: dd849e8a935e19fca0ec7b1f7267b339d4e057e888027429cd7e270660a72250
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a mass of external links, including a critical link to a known malicious redirector at `https://ttraff.club/wix?keyword=remo+recover+crack+keygen`. This indicates the document's primary purpose is to lure users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.club/wix?keyword=remo+recover+crack+keygen In PDF document text
    • http://files.vanbarfitness.com/uploads/1/3/0/8/130873804/8128251.pdfIn PDF document text
    • http://files.fairplay-peru.org/uploads/1/3/2/3/132302824/pojax.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7447/6440/files/28681860047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3619/6507/files/bitlife_famous_update_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/dasumikixivefalaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/wing_chun_kicking_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7495/files/mercury_outboard_owners_manual_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/basheshe_bahleka_by_donny.pdfIn PDF document text
    • https://c5953c82-9bc5-4bb0-92a7-dac7edc0254c.filesusr.com/ugd/60e703_e39f1b09dfb14b45a97d558d9bda6e03.pdf?index=trueIn PDF document text
    • https://ee6353cc-28ae-48b4-bb05-d0390360a5ec.filesusr.com/ugd/bcb9fd_8f024df5d8f14676996dbaa2f425fd0b.pdf?index=trueIn PDF document text
    • https://6abd350f-caf0-4a34-949c-bd87942e99f0.filesusr.com/ugd/f08e01_13d71a0d85b7416cb38a6ccc4a4c3ed0.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000601f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601F 5144 bytes
SHA-256: 275a0c3de2b7040055ca331a86846c2ea782ed4674f1144e6d10489ed11e9f65
font_01_sfnt_off000071a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A1 10468 bytes
SHA-256: d7b79d70af759ed164217d127e3ff4eb85e690da7c685a59131bb8b40eff5c98