Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef6aae4718c8d3ca…

MALICIOUS

PDF

39.6 KB Created: 2020-09-23 02:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0364aa64d221872e04d7d39cbf3b1581 SHA-1: 04184eb584754bbc72d2c9858d35c42e35a30ea6 SHA-256: ef6aae4718c8d3ca252cad550a2571f808a996167c12d2ee016e7e20d30ff71e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to shopify.com domains, but the primary link directs to a known malicious redirector at ttraff.ru. This suggests the document is designed to lead users to malicious content or phishing sites. 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.ru/wix?keyword=cthulhu+realms+manual+espa%25C3%25B1ol In PDF document text
    • http://files.oldmanmoney.com/uploads/1/3/1/3/131398406/3133492.pdfIn PDF document text
    • http://files.floorcareandinterior.com/uploads/1/3/1/3/131379832/vexezexe-xitis-fesufurig-repipozubirewik.pdfIn PDF document text
    • http://files.stpaulstroy.org/uploads/1/3/0/8/130814070/batufodedozidafozu.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/1/0432/8282/5371/files/calendar_june_2020_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3845/2381/files/kirejaxodag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6907/files/35537083270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/22340157334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9462/files/dateline_on_own_episode_guide.pdfIn PDF document text
    • https://bc951085-f91f-4e1c-b3e7-425e19d8c755.filesusr.com/ugd/dad7b5_ab901fd8a2c343ff8c6cddc26a35ca16.pdf?index=trueIn PDF document text
    • https://54ee15f2-1ae8-46ad-a116-88aa936f6f6a.filesusr.com/ugd/61567a_7ecb8ab768dc4e5b90b171d4fd7c1bf0.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4744/files/activity_series_problems_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/9872/2470/files/subordinating_conjunctions_worksheet_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/82342394559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0280/5921/files/wifuzasebevudoniwurajime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/80838192497.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_off00005c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2E 5176 bytes
SHA-256: 00f3f8f14d77d6e670ecb9a0d8ebe6827d510b7f08ccbf685cfe3deb2c2125b1
font_01_sfnt_off00006d4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4C 10064 bytes
SHA-256: 409fd5fe055e76e36edcd6cc46fd37681ffa59e50f2e7bbb90ac2b26dd363ed4

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