Malicious PDF — malware analysis report

Static analysis result for SHA-256 be525805a9d204cc…

MALICIOUS

PDF

48.0 KB Created: 2020-08-07 09:16:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce07069c22c2829c922105001211000b SHA-1: ac36dc85a67ca3bc59a089d4be7704cdb5d4fafa SHA-256: be525805a9d204cc7e8b314b9d2c1ab6f87f29992a708e8402e8a7c2c6d92a02
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to SEO-optimized redirectors, including a critical finding of a link to known malicious infrastructure at ttraff.com. The document body, though obfuscated, contains a URL that matches the redirector, suggesting a lure for users to download potentially malicious files. The ML classifier also strongly indicated maliciousness.

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=perimeter+and+area+word+problems+grade+6+pdf In PDF document text
    • http://files.chenowethbairddesign.com/uploads/1/3/1/8/131871894/kawal_fudomur.pdfIn PDF document text
    • http://files.sugarmaplecharcoal.com/uploads/1/3/2/6/132695602/769796ed70.pdfIn PDF document text
    • http://xezadaw.ctkfriendsofmusic.com/uploads/1/3/0/7/130775129/gekotawakusi-welewilawerot.pdfIn PDF document text
    • http://jenuder.escapeabstracts.com/uploads/1/3/0/8/130874524/79ffef.pdfIn PDF document text
    • http://files.coastlinepainting-nc.com/uploads/1/3/2/6/132696335/noselijaxejuwid-milufumipom-kixedexu-lapudon.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/1/0438/3742/3776/files/cnc_machine_file_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/57373325033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/vekowofabapiwajijevavoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4589/4816/files/lulukexubilur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/romanticism_characteristics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4586/1014/files/77926975030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8068/6495/files/perceived_behavioral_control.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8365/3527/files/84606236852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3910/files/anesthsie_tronculaire_dentaire.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_off0000661a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x661A 5748 bytes
SHA-256: 95f744258ce4a4a66e5411e2d46591e5883d4016e935c7dce7e49fb6d2c33a06
font_01_sfnt_off000079a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A5 10420 bytes
SHA-256: b6d332d63d52ba5218d06ddf74e24faa4e6e57df40a6b3296680b37bba61d4c0
font_02_sfnt_off00009d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D83 16144 bytes
SHA-256: f7282090e270060608fdc575ded0b184a97243f724fc845514d2e81390c10c7f

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