Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c49af3c30405d2…

MALICIOUS

PDF

38.0 KB Created: 2020-08-20 22:16:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 26e71c2a1e0c1e2c7484948fcc99c41c SHA-1: 2ef56e4ddb096f0cf34c13fadb178bcf4173a321 SHA-256: f0c49af3c30405d23e4c009bfa0969e89ca12df2876acf35b129642dd36c3d92
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=mosfet+datasheet+n-+channel'. This URL is embedded within the document body, suggesting a social engineering lure to trick users into clicking it. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=mosfet+datasheet+n-+channel In PDF document text
    • http://files.naturalsoaplady.ca/uploads/1/3/2/7/132740764/fce43300e.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/1/0440/1912/2341/files/bahishti_zewar_free_download_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/zekenekuvixixaworuwolede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4500/8039/files/metric_socket_head_bolt_torque_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/53402481847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1757/4299/files/modle_cahier_des_charges_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/rajagekodidekojalifepefak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0358/3384/files/lakajivevatozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4434/7802/files/47178909246.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/nedojawesazagufuvaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9063/1064/files/nakofeped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0349/files/domijujasuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/60280739938.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_off00004f0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F0F 5052 bytes
SHA-256: 9dc1f14234df33f51b78c23b566f042e39c6fbc06bcfa7118cb116217f402418
font_01_sfnt_off00006049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6049 14192 bytes
SHA-256: a0fee0ce9ebd2240d05f99fb1a0f51fd8e8b7524c1984f0bdeed821fb7f6c8ad

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