Malicious PDF — malware analysis report

Static analysis result for SHA-256 feecfba308ddc671…

MALICIOUS

PDF

51.4 KB Created: 2020-08-08 10:59:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b77923a433a92f1daf471766d35fc2e2 SHA-1: f957d6213a6ecf1899b3cafa361ab314901629df SHA-256: feecfba308ddc67146965c7e8e4687521430dd5c49e3f09adebe7a395bc7c819
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=bremsstrahlung+and+characteristic+radiation+pdf'. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. The presence of many external links, including to Shopify domains, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination. The ML classifier strongly supports the malicious nature of this PDF.

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=bremsstrahlung+and+characteristic+radiation+pdf In PDF document text
    • http://files.hycartstudio.com/uploads/1/3/2/6/132681482/f57fb0.pdfIn PDF document text
    • http://rixuzab.mccalldoylephotography.com/uploads/1/3/0/8/130814769/xedenipifir.pdfIn PDF document text
    • http://files.mx.thomasmadden.org/uploads/1/3/2/7/132740905/8fa6991ab94a7.pdfIn PDF document text
    • http://files.lisagoethemcginn.com/uploads/1/3/0/7/130740017/timavotebi.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/1/0431/2632/5409/files/28318637112.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/wagofirenepumazare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9683/4212/files/973572712.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/wadufemiwapapavani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9101/8396/files/84977897308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7727/8627/files/jofidopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/tosijedufewamafoxuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/bomufojadujuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2538/2051/files/blkoviny_chemie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/vejofobutopesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/nakuvup.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 8

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_off00008aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA3 5616 bytes
SHA-256: c59ecbfdb5c21c744cc6741b1086cee306cd3d5b5a68e728763f5ab0d280868c
font_01_sfnt_off00009d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D93 10176 bytes
SHA-256: 63084d2205866ad012685aea41d1e187f040708e3b44120f4a36c1540816ad4b

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