Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd669d851752c56…

MALICIOUS

PDF

53.3 KB Created: 2020-08-20 11:23:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 785875b6f56b4b98c0f1998421d462b5 SHA-1: a3bb8e1ce4f85e3658c2cf1d9b0fd3a66d2d4886 SHA-256: cdd669d851752c564bc832725df31a2d3b5ced596e75566d91667ca697cf644b
222 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'formal dress patterns' and includes the malicious URL, suggesting a lure. The presence of a 'callback phishing phone lure' heuristic further supports a phishing or scam intent. The file is identified as a PDF with a malicious redirector and a link farm, indicating an attempt to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=a+line+formal+dress+patterns In PDF document text
    • http://xixub.carolynnyounghusband.com/uploads/1/3/0/8/130814448/nakodarab.pdfIn PDF document text
    • http://melexipiz.bulverdepregnancy.net/uploads/1/3/0/7/130776394/3704817823de.pdfIn PDF document text
    • http://files.annaparkernaples.com/uploads/1/3/0/7/130739919/8324550.pdfIn PDF document text
    • http://perir.virtualracesusa.com/uploads/1/3/0/8/130814328/gizureburibogat-pugigazarako-diwokov-detawomarezo.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/1/0433/0687/7080/files/86187089948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3584/1944/files/xesavokixejuxidexekeguxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/birth_certificate_amravati_municipal_corporation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/0723/0371/files/44395823009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/59933854428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3672/0808/files/96309824694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7048/8730/files/sijaruwinefojuju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/dorn_baldur_s_gate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3444/2908/files/emotions_worksheets_for_preschoolers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/balevogigadan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2642/2687/files/kaganapan_ng_pandiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3644/1767/files/stoner_s_cookbook.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 4

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_off00008ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE7 5176 bytes
SHA-256: b6fa6a84c81151cdbc317cb8f1da2e0f5301198dddb258e64786afcf6658a5db
font_01_sfnt_off00009c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C5F 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off0000a4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4EC 10192 bytes
SHA-256: a6f6894008f67e80c20101909b441a0a7fb6927b13afc387c80988b4d5561854

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