Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38c6d9bff055341…

MALICIOUS

PDF

49.0 KB Created: 2020-08-06 02:31:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25426ea88620b16945ad9a773428f20c SHA-1: 323a4e3d524132c45cd101dda5abcc7cd5ab8ac2 SHA-256: c38c6d9bff055341f180d48352cecd2bb4024a5975a3697d214747a22173ca41
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=ethereum+white+paper+pdf+download'. The document body, though heavily obfuscated, contains text related to 'Ethereum white paper pdf download', suggesting a lure to trick users into clicking malicious links. The ML classifier 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=ethereum+white+paper+pdf+download In PDF document text
    • http://files.hocorespond.com/uploads/1/3/0/8/130813489/6422239.pdfIn PDF document text
    • http://sejudinuw.rockymountainroasters.com/uploads/1/3/1/3/131398591/segodipapevedi.pdfIn PDF document text
    • http://files.gtrtl.org/uploads/1/3/2/6/132680869/83d8a896bdd7.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/1/0433/9050/1020/files/batuan_sedimen_karbonat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/98636122540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3480/2333/files/income_tax_assessment_year_2020_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/87282044718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8089/9991/files/salukimukokeninusobif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/16245873828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/rajigob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/94860893559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9103/2216/files/lobefutudafazamijurelagij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/binomial_series.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9710/4288/files/10328901674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/winrar_vn_zoom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5533/3027/files/77010384472.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 5

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_off00008131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8131 5152 bytes
SHA-256: 08eb99ff12c5b82e70e04cb14d97b6e932af5d1fb4cdc09e4ca48fd2cf3e2c26
font_01_sfnt_off000092a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92A4 10748 bytes
SHA-256: 22f879d14793968a43ff75ca1dcce4101b96c345fc44960d6e4a5605d8149d5b

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