Malicious PDF — malware analysis report

Static analysis result for SHA-256 e50cefd9c4d532e6…

MALICIOUS

PDF

103.7 KB Created: 2020-08-06 22:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0adc75210e2beec21a231e0e5073dc33 SHA-1: fc7020c58db8191a9954b29c62b19fda75c0e693 SHA-256: e50cefd9c4d532e68786db18958fbc93fe7f0e02201864179c1356f7522f1534
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `ttraff.cc`. This URL is used in conjunction with a lure related to 'atomic structure and quantum chemistry pdf'. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector attack pattern.

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.cc/pify?keyword=atomic+structure+and+quantum+chemistry+pdf In PDF document text
    • http://files.spotlightct.org/uploads/1/3/2/6/132681992/9896649.pdfIn PDF document text
    • http://dibezeruw.xy-yang.com/uploads/1/3/0/7/130775997/soxotelubo_burep.pdfIn PDF document text
    • http://files.angelskornerdaycare.com/uploads/1/3/2/7/132711999/pilarekevarisame.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/1/0431/6227/1898/files/sokejemiwuvawafino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/repuvonabuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/76338681827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0428/7383/files/duviduzipoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7005/3784/files/sivowepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/43123673360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6065/files/fefaratozenusemawuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/7074928837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3343/5029/files/83075524477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5448/1058/files/the_fifth_wave_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8443/9971/files/zewenakapilewex.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_off00015b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B7F 5580 bytes
SHA-256: 5f1d82ca098258f18782d1c953598ed4cdc4ed42c34670d30374aabb0bf1e6d0
font_01_sfnt_off00016e53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E53 10180 bytes
SHA-256: 5094d86bf2cf42a2a12d448e7ed22f8efeb50194731ca5ae3b56d290e25c14c6

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