Malicious PDF — malware analysis report

Static analysis result for SHA-256 75c87eabcabb8027…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 09:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 33784f6e0fa989313b64702f7bd02620 SHA-1: 498da1e5e3c25d077ed7ba0cff3868ef9266bad6 SHA-256: 75c87eabcabb80273507277ba4870998d9cf96cc2b09127b6ca08abc3e9b4f5b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to an SEO redirector. The primary redirector URL, 'https://ttraff.com/pify?keyword=java+string+to+integer', is flagged as malicious. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or malware distribution, under the guise of offering free resources like cheat sheets.

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=java+string+to+integer In PDF document text
    • http://files.skylynart.com/uploads/1/3/0/9/130969965/07b3b5635.pdfIn PDF document text
    • http://files.glabachfarm.com/uploads/1/3/1/3/131383838/lituxid-geribaxejejodaf-tutuboziro.pdfIn PDF document text
    • http://files.morethanatourist.net/uploads/1/3/2/6/132681164/zarodufewiz_rinuj_wamujaxajide.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/1/0434/0151/1064/files/cisco_commands_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1335/8247/files/89954240755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0472/9243/files/gudaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/5e_rogue_multiclass.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1688/0281/files/manual_air_ride_valves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1900/9173/files/31343275050.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2697/9739/files/73031517741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/migow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/fekolotefafekolotijadanix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1307/8168/files/vufurizufisele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8520/7454/files/xewegetije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/13115291691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9464/6689/files/jufarogewejamonepegubiwim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/rubokebaborosaradoridux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/8645094528.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_off00006b22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B22 4868 bytes
SHA-256: 721626b35c1af106d23bdaf273f697e41357534939baf0ed005bd3cc2cb90d2d
font_01_sfnt_off00007bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BCC 14320 bytes
SHA-256: c41fe9cf91617a9d8d2bb41314cc0ec59a7d87f7a2976543e6b15055afe585ff

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