Malicious PDF — malware analysis report

Static analysis result for SHA-256 5997be8cd2d9fbd0…

MALICIOUS

PDF

45.0 KB Created: 2020-08-01 15:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0c11c3cdff1f18afe761a24bed69a91f SHA-1: 16aaf8296775817b54b01a329855bbfe62827b8e SHA-256: 5997be8cd2d9fbd055f5238b8714b48ce23c9223d854e80d09c978e4f47f5cf2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains with numeric slugs, indicative of a link farm designed for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=lexus+is300+manual+swap'. The ML classifier strongly flagged this PDF as malicious. The document body contains garbled text but also includes the malicious redirector URL and several Shopify URLs.

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=lexus+is300+manual+swap In PDF document text
    • http://files.tcpmagic.com/uploads/1/3/0/7/130776779/5723175.pdfIn PDF document text
    • http://files.semperfryllc.com/uploads/1/3/0/7/130739831/juredowofafu.pdfIn PDF document text
    • http://files.koncreteflava.net/uploads/1/3/0/7/130775623/rolofusam_depelakoripeton.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/1/0440/6686/5302/files/48308191438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2694/5947/files/chemistry_4th_edition_gilbert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6262/3397/files/direjimekiramugupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5435/6897/files/8882751744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/zapiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72274594547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67279733654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/zawepipawexoneda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/jurubobofubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3117/5063/files/lalidukuz.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 5

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_off0000705c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705C 5276 bytes
SHA-256: a54aced3258d08c535acc6e26d75d98865532dcef3b2dcf8c6fd9f180653f2b4
font_01_sfnt_off00008254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8254 10448 bytes
SHA-256: 9a3ed7fb5fab86d1777fb88dae92fc3c4299e96426d9873c526fe3333d9c278d

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