Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3f0f2812b7cc72…

MALICIOUS

PDF

51.1 KB Created: 2020-08-10 14:42:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 42749f93f567ab1e5c1c1f89bbeede1d SHA-1: ba16e0169b4c0db3707659dbd02188d1a7396ad2 SHA-256: 5f3f0f2812b7cc72c545da1c75f5e30a5f1ace94452b53d58398c44ed686e73b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL suggests an attempt to lead the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the malicious 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.com/pify?keyword=abyssinian+crisis+pdf In PDF document text
    • http://files.leesburgheritagesociety.org/uploads/1/3/2/6/132682787/togax.pdfIn PDF document text
    • http://files.littlecreekneedleworks.com/uploads/1/3/0/9/130969710/9585647.pdfIn PDF document text
    • http://files.increaseministries.com/uploads/1/3/0/7/130776485/3556119.pdfIn PDF document text
    • http://files.cahootsads.com/uploads/1/3/1/0/131070689/nafanipamow.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/1/0435/9297/4499/files/amhran_na_bhfiann_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/8034/7801/files/acrobat_reader_writer_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/item_generator_tf2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5336/7975/files/33458518135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8142/3262/files/german_grammar_books_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6591/5032/files/dark_souls_2_cheat_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/jekiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2451/5235/files/72460905877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/rational_numbers_as_decimals_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5042/6780/files/94923595402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2707/7032/files/81792278975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3330/3976/files/zexedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/59188455844.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_off00008a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2B 5348 bytes
SHA-256: 335196643b17dd2fc22ae853e481318292b60c40f3cd92e3e56d0f7d4a19e605
font_01_sfnt_off00009c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C56 10192 bytes
SHA-256: ee877bbea7aa82bfdab4684a0548c9f68e349ed3a1a89b45a65d85c8b217c742

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