Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fba81dcc7bcef7a…

MALICIOUS

PDF

38.4 KB Created: 2020-07-22 06:52:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07f5897720f56e94f319a18145b7a9cd SHA-1: e03eb023de75ebaa61b0c3766d7e599c5d157ccd SHA-256: 5fba81dcc7bcef7a7b63f88975d752f532e28f3713248d47f11f3c2e14034c38
194 Risk Score

Malware Insights

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

This PDF file contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to lure users. The primary redirector URL, https://ttraff.com/pify?keyword=briggs+and+stratton+450+service+manual+pdf, is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'Briggs and Stratton 450 service manual pdf'. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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+stratton+450+service+manual+pdf In PDF document text
    • http://files.swallowthesea.com/uploads/1/3/1/4/131438308/veregibikoruve_vaxatit_munabuv.pdfIn PDF document text
    • http://files.badcredentials.com/uploads/1/3/0/8/130815014/mugatusedaji_bofuralulomarix_gikeliwevasuzi.pdfIn PDF document text
    • http://files.camera1.ca/uploads/1/3/1/3/131380413/pizixejawij.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/1/0435/3359/8880/files/69886015113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/88075317933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/75815848510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/90582143946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1876/9816/files/jekit.pdfIn PDF document text
    • https://fanevuwavos.files.wordpress.com/2020/07/kagudamasexemokuf.pdfIn PDF document text
    • https://fumeperotozu.files.wordpress.com/2020/07/wisozapevedizorutip.pdfIn PDF document text
    • https://kemekakusava.files.wordpress.com/2020/06/jemufufidisevexumabebago.pdfIn PDF document text
    • https://retutike.files.wordpress.com/2020/07/90373269475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0805/6740/files/mudutimuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kividerinogofigizunewif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/xowekiweserazajamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/86656666849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6614/files/37332321463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0346/2303/files/15323204808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3108/4701/files/3156251517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/vunatijeza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/8146403541.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000593c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x593C 5820 bytes
SHA-256: 60c111b8f80a1c6288d5b75003abc7b2354e312cb5c2b8772787ba6206313d86
font_01_sfnt_off00006d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D02 9120 bytes
SHA-256: 7d8a89adea3f0997c61b0e42b1ed674ed0cd7e059575deae26460f8f342a0b6a