Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d20857b4c676d41…

MALICIOUS

PDF

44.7 KB Created: 2020-08-16 12:37:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57e7045672dd39349ca0cc5c9acd7622 SHA-1: d7a1384997d09b0097b43a813b95fda7f8930de4 SHA-256: 6d20857b4c676d41ee8fc1f550d4dbd6f4a0e0358ab45d6065030a2b1634127c
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'ttraff.cc' domain. The document body, though heavily obfuscated, contains references to the lure and the malicious URL. The ML classifier and heuristic firings strongly indicate malicious intent, likely for phishing or malware distribution.

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.cc/wb?keyword=wedding%20song%20there%20is%20love%20pdf In PDF document text
    • http://files.onelightinstitute.org/uploads/1/3/0/7/130775363/90811.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/1/0431/6397/5835/files/sogevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/swift_download_mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6693/9799/files/piwawenaxidefadevufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ralaguguzovepusumizus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9967/5041/files/73271939987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4550/9537/files/analyzing_and_interpreting_scientific_data_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4636/2523/files/berulizotujapir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4061/8134/files/colorfy_premium_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2741/4695/files/13673528692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/89448785594.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/ruzajoxik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/54488376977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/33299120191.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 3

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_off0000730a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730A 5164 bytes
SHA-256: 321a7a75125ae8b2e1ff10f0ab77397450b8dc312fff588f7f80e30d4e202a11
font_01_sfnt_off000084ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AE 9808 bytes
SHA-256: 6f3fa6d53ee02a68572ddd987eb89656894d84cdbc629f42d867885d0365e494

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