Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b590107ee87b011…

MALICIOUS

PDF

41.8 KB Created: 2020-08-06 03:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 565e00887899adcbdfb811661c442023 SHA-1: 0e2d0ae40ed09920c651cea1296ccf7864988ace SHA-256: 7b590107ee87b0113870efda1c8eede4afb8b4b9b9b8505542505e66aa129f1f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm and redirects to a malicious infrastructure, likely for SEO-based phishing or malware distribution. The primary redirector URL is https://ttraff.com/pify?keyword=spanish+grammar+books+for+beginners+pdf. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a large-scale link farm operation.

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=spanish+grammar+books+for+beginners+pdf In PDF document text
    • http://files.littlebitfishy.com/uploads/1/3/0/7/130775659/7905031.pdfIn PDF document text
    • http://files.cavershamholistics.co.uk/uploads/1/3/2/6/132681516/5701471.pdfIn PDF document text
    • http://wiratu.nicolettedaskalakis.com/uploads/1/3/1/0/131069934/2484508.pdfIn PDF document text
    • http://razupel.farcornersmusicals.org/uploads/1/3/2/6/132696212/8090426.pdfIn PDF document text
    • http://files.versus.band/uploads/1/3/0/7/130775707/228787.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/1/0429/4469/2383/files/battleships_yamato_and_musashi_anatomy_of_the_ship.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0154/3831/files/sena_device_manager.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/85108084930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5193/2056/files/help_my_unbelief_barnabas_piper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4740/3168/files/64644960038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5920/7582/files/30672817893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7577/8198/files/ctf_flag_in.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9499/0243/files/dodixibatajamiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1743/6312/files/pabutezaboginuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5293/3020/files/bowovewuzelod.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_off000062be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BE 5728 bytes
SHA-256: 5b01406e64c58eb37db0dce1b9307b68dd4c095050a0e7a1753a0507fedf0553
font_01_sfnt_off0000760a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760A 10620 bytes
SHA-256: d25025d7bfeda878f0d51cc7a84fc6e732988b9a6253d4c0f06fc443f98fcdaf

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