Malicious PDF — malware analysis report

Static analysis result for SHA-256 330857c4e6754dd8…

MALICIOUS

PDF

47.6 KB Created: 2020-08-12 06:30:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 958dc6a8b3794846f36e3125304f47f7 SHA-1: 3e9d83d8a1c4718402fd039573765e0b08346a2e SHA-256: 330857c4e6754dd8d5db763f2e830785c71e71824df28f3aa4fbe643156d5765
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=boris+johnson+brexit+plan+pdf', suggesting a lure related to political news to entice clicks. The presence of many Shopify-hosted PDF links further supports the SEO link farm heuristic.

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=boris+johnson+brexit+plan+pdf In PDF document text
    • http://files.healingsanctuaryexton.com/uploads/1/3/0/8/130874361/84016dfb8a.pdfIn PDF document text
    • http://pasoret.masakoonodera.com/uploads/1/3/1/4/131437508/3844423.pdfIn PDF document text
    • http://files.mectacprinstructor.com/uploads/1/3/1/4/131437740/2f469132278.pdfIn PDF document text
    • http://files.esaetapi.org/uploads/1/3/2/7/132740580/40226a2.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/1/0430/2556/3801/files/java_vector_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4750/files/37841735873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/26731107569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3194/4602/files/english_grammar_lessons_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2961/1171/files/zadinovorovazutinawiliza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/semilexapiwave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/biwemixeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0165/9043/files/detexobupusifepowotusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2721/2957/files/save_webpage_as_firefox_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4434/files/jazotaposuxoras.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/real_estate_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7659/7413/files/28542991214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/23964611356.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_off00007b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B79 5460 bytes
SHA-256: 139cafda47ee4490f15b3d77d004f59d2a094581774fff6218c3a58daeb46dba
font_01_sfnt_off00008dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFD 10296 bytes
SHA-256: 1b3206c2ea11dd422d9d159f9a5aacae3ac4d65ef9368ba2f9c7f973c43d6268

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