Malicious PDF — malware analysis report

Static analysis result for SHA-256 549351a6259fd744…

MALICIOUS

PDF

42.5 KB Created: 2020-08-24 01:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 594711964151b49036f313071a1d2c80 SHA-1: 307db4d02ea3b6ad16f0928e7933daeec96d9612 SHA-256: 549351a6259fd744cd4564fd2ab521cee5a021bf0bca42843069da9cf6f1d65a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a SE_INVOICE_LURE heuristic, indicating it is designed as a fake invoice or payment lure. It also fires a PDF_MALICIOUS_REDIRECTOR_LINK heuristic, pointing to the URL 'https://ttraff.ru/pify?keyword=microsoft+word+document+invoice+template', which is known to host malicious redirector infrastructure. Additionally, a PDF_SEO_LINK_FARM heuristic indicates a large number of external PDF links, with 'https://cdn.shopify.com/s/files/1/0431/0528/8352/files/rofupefijobojixekig.pdf' being the first identified. The document body, though heavily obfuscated, contains text related to invoice templates and URLs, reinforcing the lure tactic.

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=microsoft+word+document+invoice+template In PDF document text
    • http://jodaxiw.impulsivelust.com/uploads/1/3/0/8/130814187/dereruna-gesemikevuwo-nevoz-vonomarono.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/1/0431/0528/8352/files/rofupefijobojixekig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4447/files/35820071101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5381/7762/files/61602673604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4960/7590/files/initiation_coverage_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0924/4317/files/35065451074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9805/3539/files/sheet_metal_gauge_conversion_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/geponikijasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8638/4023/files/lafexewawidikevol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/diseo_de_un_elevador_de_cangilones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7064/4631/files/tewalubivemak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/faturenukunefu.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 8

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_off00006823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6823 5456 bytes
SHA-256: b92ea1163ba78b73d7ab6184f8a22c613a3d8f0de9dc5eefece5f9ea91ce54c1
font_01_sfnt_off00007ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB1 10168 bytes
SHA-256: f3502d2d5876770959cb8b266508dd3a418aa360ff382f861cfe26b268e0fd5c

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