Malicious PDF — malware analysis report

Static analysis result for SHA-256 f89528519ce6aaae…

MALICIOUS

PDF

41.7 KB Created: 2020-08-24 13:17:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2253ae430ba151d07afe3671119c4370 SHA-1: dfc4a68c3065c6daae691f1951f17a76d43bb650 SHA-256: f89528519ce6aaae52d1a8652f862581c52985b88e9a5ecd17871d15eed436cc
194 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded links. One of these links, 'https://ttraff.cc/pify?keyword=jw+bemba+bible', is identified as a malicious redirector. The document body also contains numerous links to external PDF files, suggesting a link farm or redirection strategy to distribute further malicious content.

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.cc/pify?keyword=jw+bemba+bible In PDF document text
    • http://files.vegasvairs.com/uploads/1/3/1/1/131164431/jepekisosuli-xumazoke.pdfIn PDF document text
    • http://gokiw.hestercox.com/uploads/1/3/2/6/132682787/nefixaw-tupetula-nitereleminebik.pdfIn PDF document text
    • http://files.somersetrehab.com/uploads/1/3/0/7/130740316/tamodolijem.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/1/0430/1760/1181/files/pugipivitijopek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5636/4711/files/32385711725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/96963470593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/how_to_delete_all_likes_on_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8206/3777/files/dawugudopak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/18164642421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/7347/0363/files/1191794893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0028/2783/files/30604522213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/cesare_borgia_jesus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/banking_regulation_act_summary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/bovaxado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/41045764942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4576/3744/files/xarapawebaloganu.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 5

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_off00006789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6789 4776 bytes
SHA-256: 9bea6433e5cf52c83d0bb4f8133d9cde7f099f82eafdfec5e639710899d4104c
font_01_sfnt_off000077cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CC 10120 bytes
SHA-256: 739115b124ab5e430585dab03d6188fedd1136486f90aa8d2f7ab1e87c4611fa

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