Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a7676751547b426…

MALICIOUS

PDF

45.0 KB Created: 2020-08-15 00:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2dc874c2ca5d72905588b8c599bd9d55 SHA-1: 433fba1cfb6bd05634f23ca086d085c1ad6c9a31 SHA-256: 9a7676751547b42648c19f7b580b21499939f65c8cca6a533b6b0f01584bec6d
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded links that point to a known malicious redirector, specifically 'ttraff.ru', which is associated with SEO link farms and free-download phishing lures. The document body, though partially corrupted, contains text suggesting an invoice template, aligning with the 'SE_INVOICE_LURE' heuristic. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests an attempt to deliver a second-stage payload or lead the user to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=basic+australian+invoice+template In PDF document text
    • http://files.annetate.photo/uploads/1/3/1/4/131408169/6092519.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/1/0431/7344/5792/files/2818127963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8982/0838/files/creative_cloud_cleaner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7442/8829/files/bufujevesopigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9821/0461/files/analytical_chemistry_gary_d_christian.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4419/9829/files/doripafimorakagekis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/vidotolumon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/nasb_bible_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/72066956591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0409/2839/files/sujexesopigeberadeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2849/5001/files/bursary_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0426/4602/files/lasapujugujesirogunilenul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/12391854982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3153/5509/files/biceps_workout_chart_download.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_off000071e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E6 5188 bytes
SHA-256: 8cf739c91f5eca1450a5c045eec45528915f4bb1486a52448dc5aecb75c10a6b
font_01_sfnt_off00008375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8375 10332 bytes
SHA-256: 5f12068f6d0d3113f54d2d6d1c5b0c87c1aedca3f9513571bdba7ce2f86c7a85

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