Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e5c35fa65107698…

MALICIOUS

PDF

35.1 KB Created: 2020-08-17 11:28:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3e893f833787c8e07389373771b7bc4 SHA-1: f0f15a253fde93fbe1a1ace670d58db94d36c698 SHA-256: 5e5c35fa6510769836034fb4f0d046746806006dee35edd87e64009165261da9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link disguised as exam answers, directing users to a redirector URL. This redirector is associated with malicious activity and likely serves as a gateway to a phishing page or a malware download. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm designed to attract traffic and potentially distribute 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.com/pify?keyword=edexcel+igcse+economics+student+book+answers In PDF document text
    • http://files.southgeorgiaelitecheer.com/uploads/1/3/1/8/131856124/877c02ffd52.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/1/0427/9762/9596/files/lomifopeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9775/8622/files/cours_d_anglais_americain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7319/1588/files/gimawur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8658/5749/files/pogikijiter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5111/3883/files/zidikag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6935/8758/files/operations_management_krajewski.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0199/3622/files/28136066349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/boxozup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/69166548559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6475/4325/files/52044977148.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/61361418317.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 2

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_off0000491c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x491C 5580 bytes
SHA-256: 7604d76b07ca2f9463fb283cc4ffd6e1f614a9e9acde0af826fc25ad765391da
font_01_sfnt_off00005c16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C16 10384 bytes
SHA-256: e510cceb74e088071ee76333feaf79c6ccbf7bfd13fecde63a8077902b4b1193

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