Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5fcf7df3d358dc…

MALICIOUS

PDF

69.2 KB Created: 2020-08-22 23:33:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c2707c6696827dcd30ee4f41210dade SHA-1: 4e0989b826b9bb5867626161133500bce76af9da SHA-256: cb5fcf7df3d358dcecddcb3149579e738245854888074ad632ed7591990708ab
194 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF link to known malicious redirector infrastructure. Additionally, it contains a PDF link farm, with numerous external links, many of which point to Shopify domains. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=information+society+in+philosophy', is flagged as unknown reputation and is likely part of the malicious redirector chain. The document body, though heavily obfuscated, contains this URL, suggesting it is the primary lure.

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=information+society+in+philosophy In PDF document text
    • http://masibikin.quicuisine.com/uploads/1/3/2/3/132302868/rimibomovuvunuvipoli.pdfIn PDF document text
    • http://files.newpathway.co.uk/uploads/1/3/1/8/131857049/8e26b.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/1/0431/0954/8188/files/carrie_from_carrie_the_musical_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/konagepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/nuxigelutarepulawuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/fesivegixekoselodowokuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9780/0350/files/78525378159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/welesilup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/6519/7988/files/google_material_design_guideline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6797/3538/files/surisoselivuzodoxiruri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7802/files/10871767875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/nikon_d5600_for_dummies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/wizard_spell_list_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6142/7876/files/29728266178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2790/7239/files/keep_on_dancing_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5726/5305/files/34075996925.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 3

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_off0000c99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC99B 5296 bytes
SHA-256: 91d453a32e89f2cab03e89b1fe1609c668b38fa94ed498446e0c6e55ae1612fc
font_01_sfnt_off0000db73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB73 13920 bytes
SHA-256: a1cded428dca36235b7b0223af51dd5e69288648de5b7bc2cbceee009900da98

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