Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2f45c9eb1a67e63…

MALICIOUS

PDF

32.7 KB Created: 2020-08-28 03:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88ceba75f8f893d9fd096a5314513af9 SHA-1: 8a37d75f5ca85c96371f9cc208fd0dd956a85bbb SHA-256: e2f45c9eb1a67e6381eda22111f0596acd3049bc722881154bcfba032083f7c8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.me'. The document body contains text that appears to be a lure for educational material ('Cuaderno de trabajo quimica tercero'), suggesting a social engineering tactic to encourage users to click the malicious link. No scripts were extracted from this sample.

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.me/pify?keyword=cuaderno+de+trabajo+quimica+tercero In PDF document text
    • http://files.dowdystaxidermy.com/uploads/1/3/0/7/130740298/mowupugugomijib.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/1/0435/6617/0271/files/zudoxobox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0003/7527/files/html_css_to_javascript.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8042/5370/files/zaput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8557/6857/files/quran_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5598/6341/files/tozojudegigagapitifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/fumoxubuxijenibufupotoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7753/2822/files/tosagukurufibuvulin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8520/9512/files/algorithmen_und_datenstrukturen_die_grundwerkzeuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/15276553114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2843/files/1782603014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1777/0904/files/53467902029.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 3

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_off000044ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44AD 5120 bytes
SHA-256: a8cabe1bcebca3db0a7b17539d6c4ac3d369c9ea0175d164328c4d8994e1600d
font_01_sfnt_off000055fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55FD 9500 bytes
SHA-256: 90934260b8b44a15e26b4de88d0f0c3cbecb3302a76838c02bbae6da60712c1d

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