Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf27d9cb7221943a…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 13:21:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40b2aa5bf2e46781945b93a2ecbe925a SHA-1: 2c0740099700d5f4ded3cf2ece955983e53091bf SHA-256: cf27d9cb7221943ad37e5a55994aef6f733764ba86ca8d27ec215d61169dfdac
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to known malicious infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body also contains a call-to-action phrase, suggesting a lure to trick the user into clicking the link. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, many hosted on Shopify, likely to obscure the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=boy+scout+popcorn+order+form+2019+printable In PDF document text
    • http://jaxulon.buildvaluehere.com/uploads/1/3/1/8/131856166/c7084b.pdfIn PDF document text
    • http://bogujewe.nicecurb.org/uploads/1/3/2/7/132712109/90055.pdfIn PDF document text
    • http://files.southlandcoins.net/uploads/1/3/0/8/130814209/b5fcfa6bcfa3bf.pdfIn PDF document text
    • http://files.plussizeweddingdressma.com/uploads/1/3/1/1/131164424/f4e242825.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/1/0434/7530/4612/files/pisetunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/trophy_garden_platinum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6148/4447/files/at8n_autonics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5309/4811/files/wosifisulaxidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5137/7049/files/fiwezifetupepugevod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6567/1833/files/gejoxuremeladuliderif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3070/8125/files/circle_spoke_diagram_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/bacula_the_open_source_backup_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/xavalalawemenolesowiremi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9964/3286/files/98883038166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/briggs_and_stratton_intek_repair_manual.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 5

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_off000067f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F5 6072 bytes
SHA-256: f83d79d754d3805f35fb441a5f6dee3f5c4f4e38f5f831aa512e5513e24935c4
font_01_sfnt_off00007c90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C90 10884 bytes
SHA-256: e077d8bcb86c6a8d9bdb34a67c34975ebe4cfdfea0ea04e9b922026b096ab06a

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