Malicious PDF — malware analysis report

Static analysis result for SHA-256 7577b7a671c65f70…

MALICIOUS

PDF

41.4 KB Created: 2020-08-16 00:49:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccd02e2be138372d84d9908821c770d8 SHA-1: cdda26302fb13b52f29d784c2782b0ccc1dbb77f SHA-256: 7577b7a671c65f7051e08184ecda301e36bd27332f545ba1b5e0911b2b2e2d7f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of embedded links, many of which point to a redirector service. The primary redirector URL is 'https://ttraff.ru/pify?keyword=bed+bug+reports+hotels+chicago', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users into clicking it for a purported free download. The presence of numerous Shopify links, some flagged as benign, likely serves to obscure the malicious intent and potentially improve SEO for the redirector.

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.ru/pify?keyword=bed+bug+reports+hotels+chicago In PDF document text
    • http://files.teachingprevention.org/uploads/1/3/0/9/130968943/sojelolazemetedaxi.pdfIn PDF document text
    • http://zezebano.crazy-cats-creations.com/uploads/1/3/1/8/131872155/8010025.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/1/0432/9183/6566/files/kabbalah_hermetica_marcelo_del_debbio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9038/5823/files/5353674039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/jirokimofosuwotefep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5639/7474/files/read_50_shades_of_grey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/96616459162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1157/1865/files/osrs_strength_training_weapons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2980/6759/files/halcones_de_venta_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4447/6840/files/52728486091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/6389442072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7593/5134/files/bootstrap._css_file.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_off0000632c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632C 5524 bytes
SHA-256: 544466b4b291a68b43be0d60d3ff71d0ae63757e67bd7eb2b3954d30dddbdadb
font_01_sfnt_off000075e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E9 10260 bytes
SHA-256: e8c404a7c5138cb50ed4f7f6eeeb97c153767e088d1b09017a1c35ee6d3ee29d

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