Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d12f581724f9cde…

MALICIOUS

PDF

49.5 KB Created: 2020-08-06 21:12:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47c2c9b46c2773801f7faa684d0164d1 SHA-1: 63be78965ed4cb6d93ba0ab9f5c9e0b3c720f3a0 SHA-256: 7d12f581724f9cde6f3a42c3ddc426030d510a1712dc3aa2cab2d29cd4c60336
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution.

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=descriptive+writing+for+grade+3+pdf In PDF document text
    • http://files.callkarlykapur.com/uploads/1/3/1/4/131411688/b634cf4874.pdfIn PDF document text
    • http://files.karoogravelgrinder.com/uploads/1/3/0/8/130814492/7673466.pdfIn PDF document text
    • http://files.jamesballardmusic.com/uploads/1/3/1/4/131455247/e67a5.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/1/0432/7643/5621/files/12856897237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9151/6828/files/lirarasaxiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3224/7445/files/xisomixawanotatosov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0566/5703/files/47846645255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fovurasavelibegesixaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4030/9402/files/telidovumokoxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5150/8131/files/9243820245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1147/3571/files/banemiwab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/arizona_driving_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/asclepius_wellness_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/britannia_deck_plans_2020.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 5

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_off000082f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F4 5604 bytes
SHA-256: ba8f6faafbc288a9465aa6eb7ef76c7dfcd4db876b9d4cd5e83ed7f0610277dd
font_01_sfnt_off00009635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9635 10060 bytes
SHA-256: fa78c78a54299d0cd5e5ca75da38d57984d8555a27fa48fed5c4959c1fcbf972

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