Malicious PDF — malware analysis report

Static analysis result for SHA-256 b321825308ce3222…

MALICIOUS

PDF

49.5 KB Created: 2020-08-07 03:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9490023c355161e00771540805ccf72c SHA-1: 64b19858d5a0221cce59f3b6502735e06948c623 SHA-256: b321825308ce322287b0b7bd0b7c238154eb4b9930fa1dae16901ac00bf6b9e8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious infrastructure, likely to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains text fragments that appear to be a product brochure lure, and the PDF itself contains a large number of external links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or to obscure the true malicious destination. The primary malicious URL is https://ttraff.cc/pify?keyword=brosur+kusen+aluminium+alexindo+pdf.

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=brosur+kusen+aluminium+alexindo+pdf In PDF document text
    • http://files.pittsburghaiha.org/uploads/1/3/2/3/132303035/75cd28bde029be.pdfIn PDF document text
    • http://barupo.suzannedcorsey.com/uploads/1/3/0/8/130874655/demosujebul-ridujopikolakor.pdfIn PDF document text
    • http://files.purezaoliveira.com/uploads/1/3/1/4/131409210/e9bde98.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/1/0433/0687/7080/files/wojifuxazax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0886/8008/files/siwowopiraboxisikuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0899/1125/files/wufituve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/sample_letter_of_recommendation_for_medical_school_from_doctor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8135/1839/files/at_t_dns_servers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43034806536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9724/2262/files/mesiwokufodavewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1407/6069/files/konexatolesidiwakokaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/55768756178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/rusisemuva.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_off000078f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F4 5368 bytes
SHA-256: 7de5f0c4af5f6a1af50fde659ffbd75024b83988b356bb70c51ff2308026b2d6
font_01_sfnt_off00008b29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B29 14576 bytes
SHA-256: 97de065330efb1e06ce4bf41825efda449dbc945a6e97c98d3037be6e43d1e17

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