Malicious PDF — malware analysis report

Static analysis result for SHA-256 36902dcbd116519c…

MALICIOUS

PDF

45.1 KB Created: 2020-08-13 23:43:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad897c7ae8076c7f3c6daff6a33c87fe SHA-1: 0ab146314018b91314337e3f6b77892a29f4dc3a SHA-256: 36902dcbd116519c6cf679a4e8214b7223211e51c4bbd20af8fc347c96783aee
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary redirector identified as 'ttraff.com'. This redirector is part of a link farm designed to host numerous PDFs, likely for SEO-based phishing or malware distribution. The ML classifier strongly indicates maliciousness, and the heuristic firings confirm the use of malicious redirector infrastructure and a link farm.

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=antonio+vivaldi+winter+sheet+music In PDF document text
    • http://fukidifuk.richardrundleelementary.com/uploads/1/3/1/3/131380212/5284173.pdfIn PDF document text
    • http://files.windsweptpoodles.com/uploads/1/3/0/8/130873791/7bb6cf.pdfIn PDF document text
    • http://files.pecanstreetchristianschool.org/uploads/1/3/1/1/131164387/sapuvibugezimatizib.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/1/0428/7594/5126/files/kudurexez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/46976161498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0180/7007/files/kijulivasadegutab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/4062723401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/baldor_electric_motor_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7941/6473/files/2004_dodge_dakota_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tivaluzisezulumavolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/bafg_berlin_antrag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7385/5903/files/83572342166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/61242827077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/74461985621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2851/8824/files/sm_bus_controller_driver.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 6

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_off0000627f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627F 5320 bytes
SHA-256: 1763bcc1442f3d0d718361263c34870e5d7af260909c704f6b712a7febb8c214
font_01_sfnt_off00007478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7478 15908 bytes
SHA-256: 2f9d5def98f495f8027a0af0e3da0666dd057731c48fb5c031d0de35d116b474

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