Malicious PDF — malware analysis report

Static analysis result for SHA-256 98384d663e9cee71…

MALICIOUS

PDF

72.0 KB Created: 2020-08-24 23:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 303f48f9a59ac600c22dd1cae0804305 SHA-1: e5fbc4c062e54fd8b0b02afc7f80cb809142d956 SHA-256: 98384d663e9cee711b0b0adaee1effcb4bdfc2919829d6e1a513b79297cfea77
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=britannica+home+fashions+100+tencel+sheets', points to a known malicious redirector. This suggests the document's purpose is to lure users to malicious sites, likely for phishing or to download further malware. 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=britannica+home+fashions+100+tencel+sheets In PDF document text
    • http://files.npnphotography.com/uploads/1/3/1/3/131380083/pibisusoserod_muposag.pdfIn PDF document text
    • http://files.fremontbands.com/uploads/1/3/2/6/132682303/gudixezupovose.pdfIn PDF document text
    • http://files.backcourtballers.com/uploads/1/3/1/4/131483830/cb154c1f0ca93.pdfIn PDF document text
    • http://files.alexjbass.com/uploads/1/3/1/4/131408204/pulej-bigavavubonunor.pdfIn PDF document text
    • http://files.backbeatphotos.com/uploads/1/3/0/8/130874583/sanavipogejegu.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/1/0432/6942/3257/files/97428709020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7618/8315/files/98073019179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5226/files/nibovenuwiwawitenevok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2825/8726/files/fuziveriguzijagekanawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5862/4672/files/rinojotevirege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1280/0159/files/3d_shapes_nets_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/declaration_of_conformity_template_plastic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2916/7270/files/68417909722.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8E2 5364 bytes
SHA-256: f9f90741eb3db6d35411dc2818c4889fac5f5009085fa833471b3f336fb36e21
font_01_sfnt_off0000daf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF0 10240 bytes
SHA-256: 83af9a306bd773fa6826ee7469e190c1c925963bb42fa03a136421b449527fdc
font_02_sfnt_off0000fdf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF6 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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