Malicious PDF — malware analysis report

Static analysis result for SHA-256 cba036b414c775d2…

MALICIOUS

PDF

33.0 KB Created: 2020-08-25 10:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ee5c0c6c3d49f7acccd551d7a10dc549 SHA-1: a78ed1875a7aac1d558341d0844792450cd4c6c8 SHA-256: cba036b414c775d2467dfb4ecc43ed7a1f76abaf998ef402fd6a13abe9d0946a
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 pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=indice+de+placa+bacteriana+o%2527+leary+pdf, suggesting a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. 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.cc/pify?keyword=indice+de+placa+bacteriana+o%2527+leary+pdf In PDF document text
    • http://files.kumbalekguitars.com/uploads/1/3/0/7/130775645/kupekuf.pdfIn PDF document text
    • http://files.christineshanks.com/uploads/1/3/1/4/131437982/6064072.pdfIn PDF document text
    • http://ferujifa.belgianclubvictoria.org/uploads/1/3/1/4/131453067/fivosuwiru.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/1/0430/3768/7962/files/25004788119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/segesip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/80110842590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/rasiruvabepuwijavufunadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8865/7049/files/lonozifibujubikapawipuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/sort_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/keboseworidafime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7637/8014/files/jeratojepokim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/episode_prompto_trophy_guide.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 4

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_off000045b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45B8 5184 bytes
SHA-256: 21321ccaef66e63d2ea9244c9b1f04ca82b0f127a61f650033612cf46396b588
font_01_sfnt_off00005760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5760 9356 bytes
SHA-256: 46e25c919519064052a8bdc87432d18eceea46505fb31015b35ae440525e0eee

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