Malicious PDF — malware analysis report

Static analysis result for SHA-256 e653fbb32c549bc9…

MALICIOUS

PDF

38.1 KB Created: 2020-08-15 06:27:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0402868d45a2ac82289da7a347be143 SHA-1: 2e679a7e9086fdc4cfc68a3619df3d50ba8f4649 SHA-256: e653fbb32c549bc9953830b79b3ea9472fcf5b25988e2c35ac6d3f07ba36d83a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary redirector identified as malicious. The document body, though heavily obfuscated, appears to contain the same malicious URL. This suggests an attempt to redirect users to potentially harmful content, likely for phishing or malware distribution. The presence of numerous PDF links, many pointing to Shopify, indicates a link farm strategy to obscure the malicious destination.

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.ru/wb?keyword=present%20perfect%20continuous%20and%20past%20simple%20exercises%20pdf In PDF document text
    • http://files.bhaktiyogi.org/uploads/1/3/1/4/131437276/2033441.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/1/0433/0687/7080/files/fikikotiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1185/files/illicit_financial_flows_in_zimbabwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3079/files/capitalismo_para_principiantes_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4686/9911/files/nuance_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5844/4958/files/zubewakuvidesokivimomirug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1425/7815/files/kunesiviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4077/6090/files/zukevikalotazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/wumezozirewozojiwoxivotob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/lareruraduvixepozujekowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/19664024151.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_off0000561b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561B 5372 bytes
SHA-256: 993a243c291d4534463f810f85788fb0ab680e14e40283f47bc3ecfe06c1517b
font_01_sfnt_off00006843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6843 10320 bytes
SHA-256: 5f868670364f30167d17989e444ba0e4cff07b94309cb4ff2f2c22e5d6bce9ff

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