Malicious PDF — malware analysis report

Static analysis result for SHA-256 8690831a45d38e50…

MALICIOUS

PDF

36.5 KB Created: 2020-08-10 18:19:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4738a8bcc6f509a61b872b8e744e828 SHA-1: c1bae7b32a2df8d0827d7f20805fae65120c4a3e SHA-256: 8690831a45d38e50382997554b009a3aed2a01a0444652df0601e1bb16dae6fc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of an SEO link farm. The primary redirector URL, https://ttraff.cc/pify?keyword=mis+primeras+1000+palabras+en+ingles+pdf, is flagged as malicious and likely leads to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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=mis+primeras+1000+palabras+en+ingles+pdf In PDF document text
    • http://files.gabreedesign.com/uploads/1/3/1/4/131452824/buvoxolagivufife.pdfIn PDF document text
    • http://files.levusboutique.com/uploads/1/3/0/7/130775197/gasunojedurofuv.pdfIn PDF document text
    • http://files.padreamplayground.org/uploads/1/3/1/6/131606169/9196304.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/1/0431/2157/4049/files/83765245567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8579/8301/files/21961316821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/achievement_cape_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/applied_mathematics_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/dilopibaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9119/0175/files/25169247705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7791/7090/files/46583788526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/58175136423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2779/8944/files/43800580419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/paludeximegelule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/24298976059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/general_allotment_act_of_1887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/personal_assets_and_liabilities_statement_for_sbi_home_loan.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_off00004c68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C68 5700 bytes
SHA-256: 5ea38c6b4ba7fefad0871074d6aff1ff789f284ea365e5eea37c67c1f262befd
font_01_sfnt_off00005fb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB4 10916 bytes
SHA-256: a30cd36df598469432d71a041ffbd8613b0bdb02cff7106e12d5ba88a82582ae

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