Malicious PDF — malware analysis report

Static analysis result for SHA-256 e71d0d988005e11a…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 02:52:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e96fd1543610cc9cd8e2ac710f93a76 SHA-1: 0c16704be0d7d045a94f2b7d0a0e85ce32e529db SHA-256: e71d0d988005e11ad34136074d5352615da1f1fb67efb068ca4cd9e145c37972
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. Crucially, one embedded link directs to `https://ttraff.ru/pify?keyword=earthbound+happy+happy+village+guide`, which is identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness.

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=earthbound+happy+happy+village+guide In PDF document text
    • http://files.flagshipduluth.shop/uploads/1/3/0/7/130776268/lugomojujajanar.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/1/0431/1056/3994/files/business_english_lesson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9927/4916/files/lullaby_of_birdland_alto_sax_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6767/0689/files/60199339562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7092/2655/files/account_closing_letter_to_bank.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3030/6203/files/68044829858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xiwisabimetabif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/gofajokediwukagizato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9307/1774/files/chakravyuha_songs_in_telugu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6897 3872 bytes
SHA-256: 4dcac092f6af71da7424d8567e74dd8882750aa95941ea3cf192ea73e21fb45e
font_01_sfnt_off0000764c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764C 5304 bytes
SHA-256: 2e1ffed9616bb5c9205a54c5e587022c47f92d31fc3d526a3c81ed12a4fa0912
font_02_sfnt_off00008859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8859 10196 bytes
SHA-256: 36ab9e04ccb5eee42098679ec667fdccf6e0e89f60107c2cf430ac5ff56bd1a1

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