Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcacda0d248e085c…

MALICIOUS

PDF

41.5 KB Created: 2020-08-15 04:01:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0ac0a0ed8d311f6539c385ba1729e3c SHA-1: a0fc3822123c37501e80fba33ad1312fcc6f54b4 SHA-256: bcacda0d248e085c3552b7457efdf5c4cd04f707876be00dad778bdc456b8c93
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm, with at least one pointing to known malicious redirector infrastructure. The primary malicious URL is https://ttraff.cc/pify?keyword=hachiko+statue+japan+guide. This suggests the document's purpose is to lure users to malicious sites. No scripts were extracted from this sample.

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=hachiko+statue+japan+guide In PDF document text
    • http://files.allskillsenglish.com/uploads/1/3/1/3/131381422/217862.pdfIn PDF document text
    • http://domiravus.avhauling.com/uploads/1/3/1/8/131856772/lugiwegotox.pdfIn PDF document text
    • http://wavizodu.hannahhsieh.com/uploads/1/3/1/8/131871729/falefisumumiwesow.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/1/0433/5897/8207/files/nisilagadujutirolusaguwid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5354/6656/files/mexuzipuxebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/capital_expenditure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6332/6358/files/kipud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9073/9361/files/nuzudepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7238/0318/files/220_bus_timetable_carrigaline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/43907931487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6105/9482/files/paluzig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/cours_complet_amplificateur_oprationnel.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_off0000640b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x640B 5308 bytes
SHA-256: 205d571a8ee796319f0453aac47d33e1bb828fcadf750dc8f0c1e621ca614ccc
font_01_sfnt_off00007610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7610 10436 bytes
SHA-256: 13d7039493defe17016488363b3fe916c8e5e1e44233a6e4d52c4e35fa0ccbd3

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