Malicious PDF — malware analysis report

Static analysis result for SHA-256 1286d4c0473032fe…

MALICIOUS

PDF

62.4 KB Created: 2020-08-11 03:08:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd17fc0cd6a4bf638f4a8369d3fc85ac SHA-1: 8f7be4ecf3d56111b000841da8fe52ac005426ed SHA-256: 1286d4c0473032febe169bbd27047dd1d163d2e8459c71233f8d3402aaa3062d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links designed to create an SEO link farm, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL pointing to a redirector service. This suggests the primary goal is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=prepositional+phrase+list+a+z+pdf In PDF document text
    • http://files.dvmetalart.com/uploads/1/3/1/4/131407284/1546169.pdfIn PDF document text
    • http://files.aicheuci.com/uploads/1/3/0/9/130969306/nakufilufap_kerojoriju.pdfIn PDF document text
    • http://files.artisticawardsbyjoebourne.com/uploads/1/3/0/9/130969003/6790893.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/1/0431/7003/7924/files/anatomy_of_axilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/85539847299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8903/4402/files/emmet_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1605/2123/files/nodasatiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3140/3413/files/algorithms_in_real_algebraic_geometry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/babutotuxukuxafun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5008/1183/files/fourier_transform_matlab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7909/6728/files/suvevoritakosegojomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0292/0086/files/advantages_of_rational_choice_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/18839588333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2940/4567/files/91536443082.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9945/5642/files/4543159617.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 6

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_off0000ae62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE62 5180 bytes
SHA-256: 49820cc19bf3310190e25746621138342453cb6fe27790a16a434ea87c5426df
font_01_sfnt_off0000bff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF5 14040 bytes
SHA-256: 70fde04502611dcddfb3248cdc9901fc2cca0104cedc638665f4aca56d2355e0

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