Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde93cabed1711a0…

MALICIOUS

PDF

48.1 KB Created: 2020-08-11 07:14:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9864a44d75d45a3c98852f9354607d6 SHA-1: 53fb4a6b814792a988a48de6be5cd69669aa2ce7 SHA-256: bde93cabed1711a0c50821af8255dc5b9262ef867101bf799ac35c5eecd5575f
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body text and embedded URLs suggest a lure for free PDF downloads, likely to manipulate search engine rankings and redirect traffic to malicious sites. The primary malicious URL identified is ttraff.com, which is known for redirecting to further malicious content.

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=chandamama+english+stories+pdf+free+download In PDF document text
    • http://files.kaiderlaw.com/uploads/1/3/1/4/131409385/mexigofefagaxi-zugaginava-mefilo-zobodirotulala.pdfIn PDF document text
    • http://wopadotuz.glenealylibrary.org/uploads/1/3/1/4/131437792/140eb0745d4.pdfIn PDF document text
    • http://maxokuzuw.prhsboyssoccer.com/uploads/1/3/1/6/131607600/3393314.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/1/0437/2843/7409/files/35766488938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/loviruwiguba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0934/2621/files/sikolasupalixupujelir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0065/9100/files/tudilibenifawoxetetomeker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4557/7116/files/vofos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73633131036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7355/2040/files/wosopenosotefefot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/zubeteka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7241/4106/files/wanivegadep.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_off00007c1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1A 5452 bytes
SHA-256: 374ef567001c033325cbe787ff5ffb5ea1c7c8a1d43aa49b1ebc84fa2e8c4638
font_01_sfnt_off00008e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8B 10852 bytes
SHA-256: 511b0e22fb9fe503cf3c1c1b659f8a33028544c5000c9ea8e848927d13af6407

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