Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f56d51ef44686a…

MALICIOUS

PDF

49.3 KB Created: 2020-08-11 14:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 692e8a10c6f397dc398ac405868bfc5a SHA-1: 5c9b8e698b9116c25283cbdeb37e1e764609c4ed SHA-256: d2f56d51ef44686aa82a57d948e7458b8a9012ea71b88f37bebb23177fadb10f
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 URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body text, though partially corrupted, suggests a lure related to 'Academic english skills for success pdf'. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many of which point to shopify.com domains, likely part of a link farm to improve search engine ranking for malicious content. The primary malicious IOC is the redirector URL.

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=academic+english+skills+for+success+pdf In PDF document text
    • http://files.figsofwake.com/uploads/1/3/2/3/132303388/mevidumakudatam.pdfIn PDF document text
    • http://files.carneyrounduprodeo.org/uploads/1/3/1/4/131437149/5390971.pdfIn PDF document text
    • http://vuwukuxes.vega-2.com/uploads/1/3/0/7/130775320/pulesupis_kifoniwawijoj_lunevatij_vizobesura.pdfIn PDF document text
    • http://wipalo.thriveflinthills.com/uploads/1/3/1/3/131398404/7900712.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/1/0433/7411/7015/files/59695886162.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/38755711748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/2014_honda_accord_maintenance_schedule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4111/9653/files/5e_way_of_the_four_elements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6604/8165/files/fesawadetomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/miwanurujabafuxukiguxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7709/8913/files/nec_2011_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/43054664815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4496/1436/files/felezazajekapeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8758/3650/files/barajujojunilozijiruja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7913/1551/files/29864009366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6544/2457/files/13777184379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6773/6225/files/71772180005.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 7

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_off00008332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8332 5624 bytes
SHA-256: cc6a33821ce237e7c1361491660ad067275ca68866da947a819647ce36c953d1
font_01_sfnt_off00009620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9620 9872 bytes
SHA-256: 21e4d897b6ee7e39bf131d4aa90c5cc3dcbc5433c72268d31d404ac1427705ec

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