Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c87bbda21b1ffdd…

MALICIOUS

PDF

46.5 KB Created: 2020-08-23 23:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47f95736696d6fa1f5118255196f2a14 SHA-1: 6b2a3b725299efe5a0f9f71d258e945fbff51ff7 SHA-256: 8c87bbda21b1ffdd2f4b103c46215698563bd896df89cb32d0763408eee0bff1
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=retail+category+management+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the same malicious redirector URL and several benign-looking Shopify URLs, reinforcing the lure. The primary intent appears to be redirecting the user to malicious infrastructure.

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=retail+category+management+pdf In PDF document text
    • http://fesop.soolahhoops.com/uploads/1/3/1/4/131482823/5275966.pdfIn PDF document text
    • http://files.theoldguardofprinceton.org/uploads/1/3/2/6/132682093/14671.pdfIn PDF document text
    • http://files.taniastavreva.com/uploads/1/3/0/8/130813609/dubewu.pdfIn PDF document text
    • http://files.statesocietyofflorida.org/uploads/1/3/0/9/130969083/0ae1478.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/1/0428/4507/7660/files/2668755489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/raider_of_the_treasure_trove_poem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/73716921687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2916/2152/files/24936151582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0099/3691/files/zevufawif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9768/files/2240953459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/curriculum_definition_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/5443/3183/files/35695519163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6790/0061/files/cardiology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0349/5836/files/48401880255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0899/1140/files/vubegavikebezud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1374/1472/files/musakis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6599/files/change_kindle_format_to_epub.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 8

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_off000076c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76C3 5408 bytes
SHA-256: bc7d99f6266cd64a15541b2625be9dd511eb5a9e94168e05ca20102b450dcbc6
font_01_sfnt_off00008919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8919 10692 bytes
SHA-256: 9f91891c25556b981fdaab68da8e2121d30541ead06054bca48ec4b48c0c9e18

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