Malicious PDF — malware analysis report

Static analysis result for SHA-256 33fd4807763d8629…

MALICIOUS

PDF

56.8 KB Created: 2020-08-08 05:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f66871e0673c72b3c59e4057995253c SHA-1: 0867b4f31c551c6054f5403a59fe0a088c876823 SHA-256: 33fd4807763d862996acc55e808e19f46ba6e1a6bfa4f4ac54a8a24bdc08d1ca
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirection and a link farm, pointing to a phishing attempt. The embedded link 'https://ttraff.com/pify?keyword=alejandra+pizarnik+libros+pdf' is identified as a malicious redirector, likely leading to a phishing page or malware download. The document body, though heavily obfuscated, contains this URL, reinforcing its role in the attack.

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=alejandra+pizarnik+libros+pdf In PDF document text
    • http://tonunaf.tylertech.net/uploads/1/3/1/4/131453060/764297.pdfIn PDF document text
    • http://files.tankandhealerstudio.com/uploads/1/3/2/6/132681826/losowobigi.pdfIn PDF document text
    • http://bogakag.musiccityvikings.org/uploads/1/3/0/9/130969060/xazawiteb-pejosofejinaput.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/1/0428/9835/8432/files/luvibuxunefipefijuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8231/7978/files/levigifib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/learn_french_pronunciation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/amie_electrical_engineering_question_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/17391323177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6282/files/pinux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6452/3926/files/mozesefikedumoleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/10432695671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8833/8330/files/46438451957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/camera_lucida_reflections_on_photography_roland_barthes.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 2

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_off00009d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6C 5352 bytes
SHA-256: afe378b2930cb4c8307d8803580d4253e7748d1604bef0fe4eb69c73dd961396
font_01_sfnt_off0000afb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFB8 11312 bytes
SHA-256: 9d14cea30fd115fb23ec59fac67f23d2aa3f95ed0b5a66072af6c046893421c7

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