Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ec67c4f24b9c5c…

MALICIOUS

PDF

39.3 KB Created: 2020-09-18 13:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d28cc026f862a38d91e2ecdabbec34f SHA-1: 350ec4870333584bdd0bec8a44b94b6072e5d079 SHA-256: d5ec67c4f24b9c5c49f8a3bb506da1609ada0d5fac5b1c594c9a23255f053217
194 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though partially corrupted, suggests a lure related to payment responsibility. The PDF also contains a large number of embedded links, many of which point to Shopify domains, as indicated by the PDF_SEO_LINK_FARM heuristic. No scripts were extracted from this sample.

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.me/wix?keyword=letter+of+responsibility+for+payment In PDF document text
    • http://files.lwmphotography.co.uk/uploads/1/3/1/4/131410685/kukitifizija.pdfIn PDF document text
    • http://files.geoffgoodsonhorsemanship.com/uploads/1/3/1/6/131607010/fd34d85184.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/1/0434/7848/3096/files/ieema_annual_report_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5516/1252/files/xerorigetedewega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/0624/7332/files/google_sheet_templates_for_customers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3145/3081/files/wavazuvolozed.pdfIn PDF document text
    • https://19537297-f1b6-437f-ab06-8e140fda2fa3.filesusr.com/ugd/43d598_b26466e80df849a49901b6278ab5c16a.pdf?index=trueIn PDF document text
    • https://9f7b6a81-ac77-4f22-b935-2169807c1509.filesusr.com/ugd/238140_e0b371e6b59d4cef8bd904876e8fb2b9.pdf?index=trueIn PDF document text
    • https://b339a926-ee4b-42a8-818f-bc56257855f7.filesusr.com/ugd/2072cd_de1b6f5e4e8b48ea83779d0d43a1aee5.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8556/8925/files/semi_automatic_transmission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4831/9638/files/hemolytic_anemia_classification.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 6

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_off00005c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C12 5228 bytes
SHA-256: 4d58da05af4e212b839890fbb2fdecd1c4e0e015650a6dd0b963685d78efb554
font_01_sfnt_off00006dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD3 10240 bytes
SHA-256: a63c4d270537984e0d88688e850f3a796494e632b49387fdde0e32cf130586ec

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