Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ffe7b1614ebe3a…

MALICIOUS

PDF

40.6 KB Created: 2020-08-13 00:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ec5148d294d5c9400f8a309ec27e56a SHA-1: 261c86deac71ca4d595546ecc7912134ec7069f6 SHA-256: 56ffe7b1614ebe3a7a54f8bab305221603fd8275452c4e66b536b7595ec92586
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'design trends 2020 pdf'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The ML classifier strongly supports the malicious verdict.

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=design+trends+2020+pdf In PDF document text
    • http://files.statesocietyofflorida.org/uploads/1/3/0/9/130969083/0ae1478.pdfIn PDF document text
    • http://files.greenlabelhome.com/uploads/1/3/1/4/131406840/9590574.pdfIn PDF document text
    • http://files.healthfactoryllc.com/uploads/1/3/1/4/131438477/b7fa482a835.pdfIn PDF document text
    • http://files.fundle.us/uploads/1/3/1/0/131070331/vozafanusabakis-faviw-kopuminudil-gipumujuno.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/1/0429/6278/0311/files/tixovipiralegexodezot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/wusumomawojojupoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/piccole_storie_per_bambini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7514/1794/files/51027108163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1179/2286/files/wojenuxijonoriloxulape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/11854212638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0200/2597/files/dobawega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/21455939243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/36048360704.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DE 5240 bytes
SHA-256: 351305e06b88ce478c1ebb73a0a7b0e1a593dc317d2a7ef93b6d1eb21c1486a1
font_01_sfnt_off000072c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C8 10424 bytes
SHA-256: da50af5f5b0a94fde740e7abd4f404af9215957731823ac3395c0ae1499141d0

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