Malicious PDF — malware analysis report

Static analysis result for SHA-256 767ab267c5d39bee…

MALICIOUS

PDF

35.9 KB Created: 2020-08-19 20:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb44e425512b8c0c2ff1e3ce12327415 SHA-1: f7fe66b17cc2389f19549cc7e9e77bef612d21e1 SHA-256: 767ab267c5d39beeb0c3b889456b9e2837b7d6befde55cf7852432a68d524853
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). The redirector is configured with a keyword suggesting a lure, and the overall structure indicates a link farm designed to drive traffic to potentially malicious sites. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution campaign.

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=android+meaning+in+malayalam In PDF document text
    • http://gabij.bassreevesconference.com/uploads/1/3/1/3/131381612/19494ebed57bb.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/1/0429/6579/4965/files/42588196523.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8437/3406/files/canticle_of_mary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6711/1584/files/acarology_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3188/8035/files/ccna_security_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/antimicrobial_activity_of_allium_sativum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0358/4409/files/76912830906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6552/3862/files/faxodiwifen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0469/3400/files/afcat_mock_test_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/butterfly_wallpaper_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9220/4950/files/rinosixasodasijox.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 3

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_off00004f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3D 5056 bytes
SHA-256: 46de07f36650d186c5c352a9f2dea8a6cbf7620af3ebab39c903d015d0eb89c4
font_01_sfnt_off00006056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6056 10188 bytes
SHA-256: 2341f14260e344a1a8da1c9fef1e407d03f87ac6421734a9b591913b7d4f8b31

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