Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a1dda38030aa3b…

MALICIOUS

PDF

43.6 KB Created: 2020-08-22 13:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b1f680ea58df9e5d3937a5a576f8585 SHA-1: 950be9c5e0c502227d1c5ab5e65f2d9bb60007fc SHA-256: 82a1dda38030aa3bda0435ab7094b88e32f9f0f62bc1ea1b925d14754489454f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of embedded links, many pointing to Shopify-hosted PDFs, which is indicative of a link farm. The primary redirector URL, https://ttraff.ru/pify?keyword=platform+cafe+pontianak, is flagged as malicious. The document body, though heavily obfuscated, contains this same URL and references 'Platform cafe pontianak', suggesting a lure for users to click through to potentially malicious content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.ru/pify?keyword=platform+cafe+pontianak In PDF document text
    • http://files.naturaphysicaltherapy.org/uploads/1/3/1/0/131070722/9179889.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/1/0428/6201/8716/files/4882623254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6033/9623/files/rilele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4670/2999/files/fifabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/isrotel_beresheet_hotel_mitzpe_ramon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/kaletefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/83055258201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1905/7826/files/98015692168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/96356146452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0674/6011/files/human_anatomy_body_parts.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 2

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_off00006cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CDC 5048 bytes
SHA-256: db6711114bb23008e6bed4203110404a3b4fc3ca2e4aab4270b81bee47c052d8
font_01_sfnt_off00007df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF1 10556 bytes
SHA-256: db41b20f49db9daa7ab8acceb36abc424358c2c025601c248d81fde2bcd17086

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