Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0db831a19e5278e…

MALICIOUS

PDF

38.5 KB Created: 2020-08-07 11:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 45c6296f1ca5b69968721702db81ff5c SHA-1: a430d8b82109055750f53c6d172c95ec0b2ca67b SHA-256: d0db831a19e5278eeab163d170f6d2c7224148fcb70c087a58e6ecd073b7c5a3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'bill of rights poster project pdf', further suggesting a phishing or redirection attempt. The presence of numerous external PDF links also indicates a link farm strategy, likely to improve search engine ranking for 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.ru/wb?keyword=bill%20of%20rights%20poster%20project%20pdf In PDF document text
    • http://jezuf.castillosclasses.com/uploads/1/3/0/8/130873995/22c910d25a.pdfIn PDF document text
    • http://files.mapced.org/uploads/1/3/0/7/130776131/giwokujedomuva.pdfIn PDF document text
    • http://files.asldeanpapalia.com/uploads/1/3/2/6/132681670/gixazeguz.pdfIn PDF document text
    • http://files.hunterdonchurch.org/uploads/1/3/0/8/130813108/vinedexagajivolem.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/1/0430/0747/5875/files/figasanipeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5911/8229/files/svu_theme_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4679/files/gita_chapter_12_sanskrit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/jisemilisodepifumajajoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1961/5904/files/cactus_patch_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/kubudem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0088/7457/files/importance_of_revenue_management_in_hotel_industry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0880/2468/files/xekuros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17612659915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/8229/5969/files/bienestar_emocional_en_adultos_mayores.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8780/5081/files/tyranids_8th_edition_codex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/91504728878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2763/5096/files/12170741846.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 7

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_off00005658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5658 5332 bytes
SHA-256: 88b3de3d7e8dbaca395a166e59e6c5ab417eef592d015ded26748a2e1cedbc9c
font_01_sfnt_off00006887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 10756 bytes
SHA-256: d8926a35d13feb021d2af3bef01469a28a560736cb7e3744e0701f886347fa2f

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