Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ab387e97d0d6c5…

MALICIOUS

PDF

39.0 KB Created: 2020-08-01 04:12:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f4cac5a8a88322ab7eb83de41ba4b08 SHA-1: bd69af3c7cbfc29f7a24dbfe6c4220f6d1f56338 SHA-256: c7ab387e97d0d6c53d3d948e95b53c2d844c4054c36982dc7fe07f254685b823
194 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=cswa+practice+exam', suggesting a lure related to a 'cswa practice exam'. This redirector likely leads to a phishing page or a malware download. No scripts were extracted from this sample.

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=cswa+practice+exam In PDF document text
    • http://files.dbhomeatlast.com/uploads/1/3/1/4/131452938/fibuz.pdfIn PDF document text
    • http://files.astoriabehavior.com/uploads/1/3/0/7/130776208/9669493.pdfIn PDF document text
    • http://files.schumacherbrothersfencing.com/uploads/1/3/0/7/130738732/247995c0f3e552.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/1/0428/9835/8432/files/rabilividobakomitunaxizug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0671/4268/files/deteramuraxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8359/4909/files/52332629590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/noraf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/33146281722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/numerical_analysis_2nd_edition_timothy_sauer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6382/8895/files/67911828636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9550/6592/files/waxaraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovetutokukike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5495/5672/files/law_school_personal_statement_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/fenolamufawozower.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8513/5014/files/jamamidivuwuminotaxupo.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
🗂 Part of campaign: schumacherbrothersfencing.com 3 samples

Related samples 6

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_off00005a21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A21 5112 bytes
SHA-256: a931fd178564ffbe120d861e474b78333f43e1fea610c4be43d74e7b7d3777c0
font_01_sfnt_off00006b7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7D 10540 bytes
SHA-256: e3c596d88f8f59cca1dc44a1534cfbb22e91f55974292d9a38c5fdf8d11b2bf5

Open this report in the interactive analyzer, or submit your own file for analysis.