Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f241755a44c366…

MALICIOUS

PDF

39.0 KB Created: 2020-08-06 04:02:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b5a834417d8f1a315c0116a30e4a298 SHA-1: e3f5a0867f615fe79dcc0edcb2ffc905e8422845 SHA-256: f6f241755a44c366b37073627fac78f98a50d5162376a41600f96df0b3eaace2
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=tutorials+point+computer+networks+pdf, is a known redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDF files, suggesting a link farm or lure to disguise the malicious intent. 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=tutorials+point+computer+networks+pdf In PDF document text
    • http://files.sapphiria.com/uploads/1/3/2/6/132682913/peweguk.pdfIn PDF document text
    • http://files.erikkuska.com/uploads/1/3/0/8/130874583/nirunesiradiwi.pdfIn PDF document text
    • http://files.pharmatodharma.org/uploads/1/3/2/6/132695738/715cef43cf3.pdfIn PDF document text
    • http://tumivex.fccdks.org/uploads/1/3/0/8/130874620/bopuko_tirilezuvabe.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/1/0430/5590/6973/files/balogarib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/givevudaxoxepuveboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/81096773262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5353/0782/files/maxotazano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/lenarugipaxezufuse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94192334972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/l_carnitina_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/jigiraxuxevesufot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/jagamiwokoborobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/waliraxuvabefuwujimep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3192/4629/files/suzuki_250_quadrunner_repair_manual_free_downloads.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_off00005a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A74 5404 bytes
SHA-256: cfd4f6b662976e4b8ad2b4eef89804e5ac3e116b28fafca1f8701072cd11aa08
font_01_sfnt_off00006cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD3 10012 bytes
SHA-256: e43fb50f46947e9c561a51dcb017a1a5ac694e5b9fa80898adaae4629b51b232

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