Malicious PDF — malware analysis report

Static analysis result for SHA-256 5928510e6161ece0…

MALICIOUS

PDF

32.8 KB Created: 2020-09-22 09:40:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e985314fd75b2980947d6ccb53c3fe4a SHA-1: 283c8d56f9a21ef1d5d629222b25f902fbaa3965 SHA-256: 5928510e6161ece0939de31bd6663dce3cc7589929ec934d117c0da4d06074a1
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links pointing to various PDF documents hosted on external sites. One critical heuristic identified a link to a known malicious redirector, and another flagged the document as a link farm. The embedded URL 'https://ttraff.me/wix?keyword=hooked+inc+hack+gems' is likely the primary malicious destination, while the other listed URLs contribute to the link farm. The ML classifier strongly indicated maliciousness.

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.me/wix?keyword=hooked+inc+hack+gems In PDF document text
    • http://files.jessirobertsonmft.com/uploads/1/3/1/3/131381363/c189c4ab9.pdfIn PDF document text
    • http://files.scigo.co.uk/uploads/1/3/1/3/131381363/sefoxerutu_wenamo_sasodonoki_nojapitobefuti.pdfIn PDF document text
    • http://wuralalir.alaskaprostart.org/uploads/1/3/1/1/131164435/sidofiduloxuwude.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/1/0432/4684/6107/files/74185667237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/worasilaratenedadonoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/11604504200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9265/9362/files/the_gift_2015_movie_streaming_online_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8471/5934/files/happy_birthday_piano_sheet_music_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1186/4738/files/jayme_closs_rape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/codigos_control_universal_rca.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5827/0101/files/age_problems_aptitude_shortcuts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3676/2527/files/bsphcl_assistant_notification.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_off00004611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4611 5252 bytes
SHA-256: 28aad281b3609a00d1b5400524d17bbd0fe037ab3b1c1445cabd123d27e45101
font_01_sfnt_off000057c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C6 9100 bytes
SHA-256: ded6134c8f06a1d69594e93e7f587af467d6eaeb726f99511ba6fa3ca54a917f

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