Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc85888bde6891c4…

MALICIOUS

PDF

42.4 KB Created: 2020-08-22 17:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4a9b3c1fbf41a8bc8768891ca5bc7cd SHA-1: 84abf287dbaed6462d0983eb099d84ae6f9d26f4 SHA-256: cc85888bde6891c4e859c53e5b021026f2bf870f62bec26a96582a006a1d3ff0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains a link that redirects to a known malicious domain, disguised as an 'ACH request form'. This, combined with the heuristic indicating a callback phishing lure, suggests the document is designed to trick users into visiting a malicious site or contacting a scammer. The presence of numerous links to Shopify-hosted PDFs, while many are benign, indicates a potential SEO link farm strategy to improve search engine ranking for malicious content.

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=automated+clearing+house%2528+ach+request+form In PDF document text
    • http://files.mediterranean-maudsley-forum.co.uk/uploads/1/3/1/6/131637362/5968222.pdfIn PDF document text
    • http://files.eddielandsberg.com/uploads/1/3/0/9/130968984/fomuxakojojijaf-dafura.pdfIn PDF document text
    • http://files.back120.com/uploads/1/3/1/8/131856161/fubelinodavini.pdfIn PDF document text
    • http://files.ctopcustom.com/uploads/1/3/0/7/130738534/ginoju.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/1/0437/3633/4485/files/66340298399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6812/1237/files/excel_consolidating_data_from_multiple_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1226/7937/files/nezajonaxedoseramubas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0087/9510/files/97035767743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/adrenal_gland_histology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/zodujisifemixupoxovitira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9823/4270/files/60455329744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5400/files/piano_sheet_music_jazz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0978/5499/files/boruzufobe.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_off00006717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6717 5628 bytes
SHA-256: fba273cc8c0c736c103333bc4a410e2ab41f87fe47d499a1357bc54932d824b4
font_01_sfnt_off00007a0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0B 10196 bytes
SHA-256: aca379977ec7479388546c486ab4a33593273cf06557e50050c688d119c0fc23

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