Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fcd456a61cb0710…

MALICIOUS

PDF

45.1 KB Created: 2020-08-22 03:57:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7524b8d91a030aaa6c1933145bca5ca8 SHA-1: 822972419a9a70c963562a5cacba08980f5d97c5 SHA-256: 6fcd456a61cb0710c31fd494ffc4c9475baa8822b26c6e6eb3ab37ecdb287baa
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though partially obfuscated, suggests a lure related to a 'worksheet', and the embedded links are likely intended to lead users to download further malicious content or phishing pages. The ML classifier strongly supports the malicious verdict.

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=common+topographic+map+symbols+worksheet In PDF document text
    • http://falaregom.theflightproject.org/uploads/1/3/1/6/131606069/zevuzifekilifuv_janogeme.pdfIn PDF document text
    • http://files.tracylarkindesign.com/uploads/1/3/1/4/131437370/3569942.pdfIn PDF document text
    • http://mozoxeg.team-change.com/uploads/1/3/1/4/131412290/modegavimurufiruwun.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/1/0431/8376/7713/files/9th_class_chemistry_notes_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/15000_useful_english_phrases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/xuwojuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/6031/0695/files/web_page_development_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/39747171865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8474/1798/files/sabiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/82390505821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6436/1113/files/togekajakisuguvumoxowik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7868/4573/files/38219777586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0469/8535/files/bacteriology_short_notes.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B59 5652 bytes
SHA-256: e972737ff972de402cf0bc0bfc0965a7e875f5724e6b5dd3b0c1cf5e6a2ddc6a
font_01_sfnt_off00007e7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7A 13036 bytes
SHA-256: 0183d55347304d9d88dcf3d3c20aa244df72471f2c1cf9d053ff8d34fa39446a

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