Malicious PDF — malware analysis report

Static analysis result for SHA-256 b79b8f5d9257590e…

MALICIOUS

PDF

35.0 KB Created: 2020-08-24 08:31:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f5baabf1a002777e9a885f9b7d0a5467 SHA-1: e08c0b84d9d0968652919e4985a9f9e6e159ad9d SHA-256: b79b8f5d9257590eb4f817cf0adfb04c4ce55c63014f10fa92d492b800409b29
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating a link farm designed to redirect users to malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify. The ML classifier also strongly flagged this PDF as malicious. The document body contains garbled text but also includes the primary malicious URL and several Shopify-hosted PDF links, some of which are confirmed benign while others are unknown.

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=self+adhesive+laminate+sheets+for+cabinets+uk In PDF document text
    • http://files.themydlarzlab.com/uploads/1/3/0/7/130740142/nasexezuwikej.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/1/0429/5504/7068/files/tadakipafikerazomopamekus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/guliwarepimabijes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/buwesaxorepoben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/sifitaroxowubimolokug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/rawasenaxanurab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/11283774870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2630/8510/files/xedujokuxopilasazuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7968/7587/files/33103150828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7693/5068/files/camino_island_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4909/0200/files/raul_prebisch_dependency_theory.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 1

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_off0000481b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x481B 5628 bytes
SHA-256: 89c6883bc72ba91b6f874974d4a5bee36264c6826a93adcc5dd90f8ade6dae05
font_01_sfnt_off00005b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1A 10908 bytes
SHA-256: d63693b1aec80dc7e34c55cd90691adf3fa95ebde820d3e94235fc676851355a

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