Malicious PDF — malware analysis report

Static analysis result for SHA-256 24209635744e8923…

MALICIOUS

PDF

41.0 KB Created: 2020-08-03 06:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 995ee7de5291b980ad9a52d67f09ffe5 SHA-1: 4c8aea3896f2b756747f7017b1d369389ae9dc79 SHA-256: 24209635744e89239b1191c44c36912f1fa2b755b4700cd9e4eac128142b3c73
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at ttraff.com. The document body and embedded links suggest a lure to download a PDF, likely to lead the user to malicious content or further compromise. The ML classifier strongly supports the malicious verdict.

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/wb?keyword=skf%20bearing%20book%20pdf%20download In PDF document text
    • http://files.alightintheworld.org/uploads/1/3/0/7/130776795/vumurebadone.pdfIn PDF document text
    • http://files.chayetione.com/uploads/1/3/2/6/132681053/sinova.pdfIn PDF document text
    • http://files.dndamsels.com/uploads/1/3/0/7/130775023/jupaguferuke-bigapod-wujovisumezizod.pdfIn PDF document text
    • http://files.usstheodoreechandlerlettersfromasailor.com/uploads/1/3/1/3/131398428/nubowosagixube.pdfIn PDF document text
    • http://files.alphonseasylum.com/uploads/1/3/1/4/131407138/mugijemasup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/the_square_2013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/godmode9_dump_cart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/lebipeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5255/4657/files/royce_gracie_vs._matt_hughes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/7767312994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/40086320474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1832/8991/files/tinar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/66273480325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/kixekoxadumusokatobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/digalikerewuxajevukadud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5802/6903/files/lovowuxer.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 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_off00004dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDE 5136 bytes
SHA-256: 842064c1e5329abf75e905941e68a9b12080815daedefa6089543a67698a82a9
font_01_sfnt_off00005f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F66 13252 bytes
SHA-256: e3ac48b79cfd5f528d9a0f662972aeabaa47ef171e3437b8f474b5443d3c968d
font_02_sfnt_off000088e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88E8 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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