Malicious PDF — malware analysis report

Static analysis result for SHA-256 2439cc2bafe4e08e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-22 22:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c93cec12e5a813b66a8ba7aede890e3 SHA-1: 58af501ba44c382f8c8e8a1b4215cb15f0504ad8 SHA-256: 2439cc2bafe4e08ebb662e749c60a47aa374e2c893dd050b8ced1a95c27505fe
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=reformas+borbonicas+medidas+politicas'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous links to other PDFs hosted on Shopify. This suggests a campaign focused on SEO manipulation or distributing further malicious content. No scripts were extracted, and the document body is largely unreadable binary data.

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=reformas+borbonicas+medidas+politicas In PDF document text
    • http://files.fpelc.org/uploads/1/3/1/0/131070561/xexubo.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/1/0443/6351/4012/files/2109285888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/jm_coetzee_waiting_for_the_barbarians.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/direpevuruzesalepuragatok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/43518765873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/29139707809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/14975236882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/iphone_6s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/the_fall_book.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 1

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_off00007e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2F 5448 bytes
SHA-256: 6870338063c6d5edf38eec47cbd44b30de631744f6d38975b85e7fdb2c28886e
font_01_sfnt_off0000909c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909C 10580 bytes
SHA-256: 6a06affd3835945d831204d8dcb775d125bac3c535a8e866d43693e9a64a8fd3

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