Malicious PDF — malware analysis report

Static analysis result for SHA-256 223a52f08077fa39…

MALICIOUS

PDF

48.5 KB Created: 2020-08-24 10:07:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89b7aee46d0df6eaf2a5309a0f104b26 SHA-1: f5392d1e95b2d455bafe4c704468026bbf960df0 SHA-256: 223a52f08077fa39020d4a066adbd42722edc57e6602afbd7d61ea4c50f9d143
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com', which is used to lure users with a 'kaplan act practice test 1 answers' keyword. This indicates a phishing or scam attempt disguised as educational material. No scripts were extracted, but the primary attack vector is the malicious redirection link.

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=kaplan+act+practice+test+1+answers In PDF document text
    • http://vafumaxon.friendlifehacks.com/uploads/1/3/2/6/132682137/879379.pdfIn PDF document text
    • http://zarufenu.debbiesangelsproductions.com/uploads/1/3/1/4/131453206/7729057.pdfIn PDF document text
    • http://files.roanmountainglass.com/uploads/1/3/0/7/130776125/fofapaxopetekuzenob.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/1/0435/9087/7339/files/bujekokiligetasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/xapobofid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6284/4837/files/67615538057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9663/8365/files/staples_5_mil_laminating_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9970/7810/files/auditoria_fiscal_procedimiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/zavatojur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3077/files/reliability_centered_maintenance_case_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8562/files/lucas_giolito_fangraphs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/14629444751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8868/3932/files/82121390309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/fejuxatenaligulolevema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/67622395089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4463/3756/files/53568845559.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_off00007f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F25 5040 bytes
SHA-256: 015590afa752790a9a3a016add46453f7cd9a6bae8ac643a37f88e0de462d3cf
font_01_sfnt_off00009071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9071 10844 bytes
SHA-256: 8932f27bac9e73d6c92e40080ddcc77211298bf8b2b429d2269912bca22541a0

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