Malicious PDF — malware analysis report

Static analysis result for SHA-256 0133c38930d4f713…

MALICIOUS

PDF

45.7 KB Created: 2020-08-25 13:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a36ec6bc2abeefd4e52cdfc1eb818b6 SHA-1: d5cc9206ec6ad38e2bac34d4feb746c49e4020b5 SHA-256: 0133c38930d4f7134f3e998aafbf3d45fab7055da529bd5702e9aa8192945e9c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=bold+italic+font, which is also flagged as a malicious redirector. This suggests the document is designed to trick users into visiting malicious sites under the guise of offering downloads.

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=bold+italic+font In PDF document text
    • http://files.greatscottideas.com/uploads/1/3/1/4/131453215/f511e85faa.pdfIn PDF document text
    • http://files.elizabethkidder.com/uploads/1/3/1/4/131453215/givopo_sidenokagubupa.pdfIn PDF document text
    • http://files.gagroundcare.com/uploads/1/3/0/7/130738720/pubekuwugize-powisazere.pdfIn PDF document text
    • http://files.pheobeandlulu.com.au/uploads/1/3/1/0/131070982/5c6a6fb9f0c9183.pdfIn PDF document text
    • http://files.mumarch.net/uploads/1/3/0/7/130775126/vukizipovegilak_pazajejum_morutojege.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/1/0431/7331/4715/files/grammar_worksheets_upper_intermediate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9593/2584/files/45716116417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0847/3763/files/adventurer_pledge_and_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0963/6512/files/43553422697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/jquery_crash_course.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/jotugavagofune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/3969/5524/files/assamese_new_song_link.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off00005e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4E 4788 bytes
SHA-256: c99c60b7bd18a0445e9ea0746c604bf04b3ffacafc9f52ec64ddef43e24109ba
font_01_sfnt_off00006eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAC 11412 bytes
SHA-256: 4b38a3e4cb82e1f1994fc10df0ee6a68dd3a98dc8c065c44b2d4b516cc692cda
font_02_sfnt_off0000959a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x959A 16084 bytes
SHA-256: ce90dcb8f80a691a226d66d7b9fb40db13b52946125f6d312f8860abae454107

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