Malicious PDF — malware analysis report

Static analysis result for SHA-256 f69afbc712f34ff4…

MALICIOUS

PDF

70.0 KB Created: 2020-08-25 19:07:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d69c9e390288a870a9046d29512623da SHA-1: 0b36b77abac28eb9eb32f5f4b8184f5e21c2a4fa SHA-256: f69afbc712f34ff4c1ca5e270d0766933bf0385687b623b9d706d70f28cee87a
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'Centos 7 linux server cookbook pdf'. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting the user to a malicious site via a seemingly benign link.

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/pify?keyword=centos+7+linux+server+cookbook+pdf In PDF document text
    • http://files.sydneymcneillwrites.com/uploads/1/3/1/3/131398076/texulagebum.pdfIn PDF document text
    • http://ziten.eleftherianoslab.org/uploads/1/3/1/3/131383613/1572214.pdfIn PDF document text
    • http://files.banaliabody.com/uploads/1/3/2/8/132814030/53c4017e2ff607.pdfIn PDF document text
    • http://kepopib.200westevents.com/uploads/1/3/1/4/131405965/294bdc03fa0acf1.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/1/0431/7301/9808/files/35641191961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0088/9507/files/axis_bank_credit_card_cancellation_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/16717695476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/rugadugivonuvawik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/diversity_in_living_organisms_question_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3766/2103/files/monthly_budget_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/85963568443.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_off0000d0ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0CE 5256 bytes
SHA-256: 09e406ddac7a502dfe6eef5133c8d7cde40b8fd797fd5374ad1feb8ff2b07076
font_01_sfnt_off0000e2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CA 12608 bytes
SHA-256: 9dfd87605447094e5614f93f4c1f7cfb8efb41838537c53e74735b9aee2c2cfe

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