Malicious PDF — malware analysis report

Static analysis result for SHA-256 66b50bf77742efc1…

MALICIOUS

PDF

42.7 KB Created: 2020-08-07 04:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2fddb93b68d0994d6bc29a37749a5667 SHA-1: 17386bdb0ef0db9465d94dc99f545c93586cd062 SHA-256: 66b50bf77742efc1fea0c382328e4d05327a354eb3f88cf8da2cab89a71725af
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating they lead to known malicious redirector infrastructure. The primary redirector URL is https://ttraff.com/pify?keyword=antisocial+theory+pdf. The document body and embedded artifacts suggest a lure related to 'Antisocial theory pdf', likely a phishing or malware distribution attempt.

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=antisocial+theory+pdf In PDF document text
    • http://files.quadcityarts.org/uploads/1/3/0/9/130969926/deeeab.pdfIn PDF document text
    • http://fotav.lisasporte.com/uploads/1/3/0/9/130969358/ad9c7.pdfIn PDF document text
    • http://files.symmetry-careers.com/uploads/1/3/1/4/131454699/razulil.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/1/0435/4696/8215/files/85826984835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0086/3643/files/nanemera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3908/8022/files/mawagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/eurydice_by_sarah_ruhl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1944/files/wexawusogaduzutisupik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/19773411084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/87683599647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9387/7145/files/definition_of_arthritis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/kofakutoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8923/1000/files/tizekopogagosogapatis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/22640739107.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_off00006909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6909 5336 bytes
SHA-256: be98d419f016a84a2aa328feab5516329eb288fc8078d0adf508eb1a7358c4e2
font_01_sfnt_off00007b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B35 10248 bytes
SHA-256: fb1859aeda77745c1c3ffc8f025d2ec412dc0fc1371526d7c5b4a09e35b2a83a

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