Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f8bab1d883108e…

MALICIOUS

PDF

52.3 KB Created: 2020-08-11 09:32:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 720e43de1a8440e5eeef0d9b44f970c5 SHA-1: a33b9d12048b067cfcc758ac242c629395b5aa19 SHA-256: b5f8bab1d883108ea5f0122abd4acd58cd4eee98c39c25a57325ee1d2f7dc2f6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Link T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector infrastructure at ttraff.com. This suggests the document's primary purpose is to lure users into clicking malicious links, likely for phishing or malware distribution.

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=bank+management+system+project+documentation+pdf In PDF document text
    • http://files.vickiofficer.us/uploads/1/3/1/4/131437615/fuxuwekipix.pdfIn PDF document text
    • http://files.avistonlegion.com/uploads/1/3/0/7/130740316/3371175.pdfIn PDF document text
    • http://files.utahpeers.org/uploads/1/3/1/4/131406435/libijiweven.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/1/0432/5064/7202/files/gatutesidozijofugigifase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5127/0815/files/huskee_lawn_mower_parts_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4942/5823/files/32250150404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0438/7750/files/mitegowomelelasebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0635/9713/files/32232817005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5010/6018/files/winegudowesivarogevujem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/tardiness_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/gutojituxotevofezesugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/koratasinawekisazadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3231/9912/files/ladowuwunon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.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_off00008e55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E55 5736 bytes
SHA-256: 76a6519734665984691d2f6cac34be36117d90595c52e9a3202b38d273a71685
font_01_sfnt_off0000a1cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1CB 10032 bytes
SHA-256: cda6cea098998ee060c7844eb900a5041a8e12cb2ee5027073a665b6cddda75f

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