Malicious PDF — malware analysis report

Static analysis result for SHA-256 76a2aa6c448bb333…

MALICIOUS

PDF

40.2 KB Created: 2020-08-21 21:19:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 746d75e1f32dc9272482faddd58315dd SHA-1: a8e80d350ad912ec3fbbf677e5dd7b329d6f661e SHA-256: 76a2aa6c448bb333c2d0cc5f739d91c8fa830678cf9d87ae2952f44bf38d629b
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 identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=formule+pour+calculer+un+pourcentage+de+diminution'. The document body, though partially corrupted, also contains this URL and a list of other PDF links, suggesting a link farm or phishing attempt. The ML classifier strongly supports the malicious verdict.

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=formule+pour+calculer+un+pourcentage+de+diminution In PDF document text
    • http://files.kennedycustomprops.com/uploads/1/3/1/1/131163833/gojotupupeniri.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/1/0433/5910/9279/files/mekimekonikemijedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8593/files/caliper_test_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4173/4311/files/81685894105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3353/4369/files/stephen_king_short_stories_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4487/2085/files/android_transfer_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/json_lint_formatter_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/dental_assistant_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/wibopukul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0741/0329/files/ketejubajiziborodupome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2206/3515/files/ibm_vision_statements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/5307/4843/files/autobiography_poem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/ey_2019_tax_guide.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 1

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_off00005ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA5 5172 bytes
SHA-256: e0369e93cd36d60e127b57691e857003215a0a3594b77d31b3bef1f7e8821b6f
font_01_sfnt_off00006d21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D21 11640 bytes
SHA-256: cd30c5e43a5c03920df437d345c188adb69d6366204ef56c6b7fefe5173a6b30

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