Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ebe0288838a2da…

MALICIOUS

PDF

58.7 KB Created: 2020-08-11 19:29:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b67f551672e1a5084d1b14c0b0a8bad9 SHA-1: 0b72cc02c6d3d7ec5eea00c936f1942cde2e8873 SHA-256: d3ebe0288838a2da4df1c7f65bbad8d7938d1a98edaa7f4c2e600f95516b6fb8
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm, likely for SEO poisoning or to distribute malicious content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. The primary IOC is the malicious redirector URL.

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/pify?keyword=titrasi+redoks+permanganometri+pdf In PDF document text
    • http://files.overcastvapors.com/uploads/1/3/1/3/131381259/jakewatezawajak.pdfIn PDF document text
    • http://files.hijackingfieldtrips.com/uploads/1/3/2/7/132740564/gimobuf.pdfIn PDF document text
    • http://files.philipcleaning.com/uploads/1/3/1/4/131406075/75e25.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://cdn.shopify.com/s/files/1/0439/2304/6568/files/61588998922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4051/7792/files/speech_to_text_google.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3842/5767/files/92486208575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2301/5841/files/nda_general_ability_test_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8152/1569/files/cognitive_bias_codex_with_definitions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/24164374776.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1294/8121/files/52387641586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jivanup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8045/8144/files/95042496472.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/eastern_sun_diablo_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4347/1010/files/73386027033.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9936 5128 bytes
SHA-256: 06d7644a749d58f32a345cc1f80a7e2b18a1448c274aa8f90e37b21a91af7f78
font_01_sfnt_off0000aa8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA8F 10404 bytes
SHA-256: 9b1e6cc70bd0e6894de2a796fefac4ed3c79c8334c5b40cbe47218e03a7f6e46
font_02_sfnt_off0000cde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE5 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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