Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9f4c6cce1e13237…

MALICIOUS

PDF

48.8 KB Created: 2020-08-12 04:03:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c86401c49b5205122a0dc48309111c5 SHA-1: 188843911a6afdff4e9c25384eb90a35417b7a43 SHA-256: c9f4c6cce1e1323787d807274655da8da9e1fdb768e08779345b75c5109eb5cf
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documentation, but the primary URL redirects to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This indicates a phishing attempt to lure users to malicious infrastructure.

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.com/pify?keyword=arduino+board+manual+pdf In PDF document text
    • http://kazafinul.arabellasheen.co.uk/uploads/1/3/1/4/131406799/5987757.pdfIn PDF document text
    • http://dugebimip.henryssports.com/uploads/1/3/0/8/130874050/bobekawez-gufebege-kiwanirebewuruj.pdfIn PDF document text
    • http://files.healthymarriagehealthyfamily.com/uploads/1/3/0/7/130739214/tojekevazes.pdfIn PDF document text
    • http://files.fionasenton.co.nz/uploads/1/3/0/7/130775431/9255697.pdfIn PDF document text
    • http://tovalisu.maigretfamilyfarm.com/uploads/1/3/1/0/131070993/a0fbb4c.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/1/0433/7673/8462/files/mijalubajanirunel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/kentucky_marriage_license_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/hillbilly_elegy_chapter_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/91235896977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3628/5860/files/gully_erosion_control_measures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9993/8211/files/simple_fruit_smoothie_recipes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3847/8229/files/cp5151_advanced_data_structures_and_algorithms_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6388/6495/files/75638294859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5680/7586/files/calendario_2020_settimane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/tulisaji.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_off000082da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82DA 5140 bytes
SHA-256: 8e6860818dc358235c48a24e0b1fc7d88141c010026ed745bc1ca2a242ebc678
font_01_sfnt_off00009435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9435 9900 bytes
SHA-256: 2dbf79380301271c90922d147c0989aee8509d571332a46ce795539edcf63b5d

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