Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a3310c2837d425c…

MALICIOUS

PDF

44.8 KB Created: 2020-08-02 06:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8aa2c9ff342a93974b3942be0719f0cb SHA-1: 2461b0ba4b70c28bde28c30f6ee57b02b0bb7174 SHA-256: 6a3310c2837d425cd9c8bad7106e50462e35841e021a6f1185846101b0e87bf1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. The primary redirector link, 'https://ttraff.com/pify?keyword=briggs+and+straton+boat+motor', is flagged as malicious. This suggests a phishing or scam campaign using a link farm to distribute malicious content, likely aiming to trick users into downloading malware or visiting fraudulent sites.

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=briggs+and+straton+boat+motor In PDF document text
    • http://files.srhair619.com/uploads/1/3/1/1/131164157/e5227ce4.pdfIn PDF document text
    • http://files.ecrcme.com/uploads/1/3/1/3/131380889/95b954b848c1ad.pdfIn PDF document text
    • http://files.zionhillbrookshire.org/uploads/1/3/1/0/131069863/4bc942856a33f.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/1/0432/6408/2073/files/33845826884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1415/1589/files/finite_mathematics_and_calculus_with_applications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6763/5867/files/19252884553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulexukiwogefera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8573/9685/files/docker_pdf_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/xutijimimutozevoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2932/3158/files/desus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/sun_vat_40_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/xixesukagixawufitet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7447/7473/files/68127048250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/43817405714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/fogorore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9740/7126/files/jozitusabewibo.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_off00006f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6B 5300 bytes
SHA-256: ddfe00eb4566376d2e38db24bf7075383fe10842f0dcf03a91408bbbed372957
font_01_sfnt_off0000815a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815A 10364 bytes
SHA-256: 50361c9f48b508d87109cdb8d404095447b1b03215b5129be7637f6ae49625aa

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