Malicious PDF — malware analysis report

Static analysis result for SHA-256 374e6371aad1f40b…

MALICIOUS

PDF

47.8 KB Created: 2020-08-22 05:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9d924923026c8a01f84b0008dde4b390 SHA-1: 5030316bf222d571c3fed131d83caaa0b19d65c0 SHA-256: 374e6371aad1f40bbacc68ba093007c10106e7c84e6ef13bb06f2c7d6b833d5b
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates a malicious redirector link to 'ttraff.cc', suggesting an attempt to lead users to harmful content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=blue+bead+question+answers', reinforcing the malicious intent. The presence of numerous shopify.com links, while some are benign, is part of a larger link farm strategy. The ML classifier also strongly flagged this PDF as malicious.

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=blue+bead+question+answers In PDF document text
    • http://takofibe.i-a-m.tk/uploads/1/3/1/4/131407377/c94a06d050f37d.pdfIn PDF document text
    • http://files.dadandrenee.com/uploads/1/3/2/6/132681544/189247.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/1/0446/5927/7987/files/41146675252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9805/3539/files/beach_wedding_invitations_templates_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7272/4897/files/arsenic_in_bottled_water_consumer_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6880/8613/files/limomotatosuwagowezugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/2013_ford_fusion_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6881/5528/files/mahalaxmi_calendar_march_2020_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2746/4097/files/top_rated_hair_dryers_consumer_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/chrome_for_mac_os_10._5._8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0476/2011/files/xotezefediluveworu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6608/2716/files/chemistry_waec_questions_and_answers_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9864/5404/files/mp3_to_mp4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2027/8171/files/vafarikonituxozikojemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/scientific_cover_letters.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_off00007f23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F23 5228 bytes
SHA-256: eb332c6c04685a33f17d64c9a587c977783410930c638380b87fcecd505ce739
font_01_sfnt_off000090fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90FD 9900 bytes
SHA-256: 4eddb23b3fb1e3117ce8f8e661bd23bc3fd4f658b43be3ca6153804eb92d8902

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