Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c5699ed2b6687d3…

MALICIOUS

PDF

46.4 KB Created: 2020-08-27 22:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da5e40fe678cda50f25f11d5696d89e5 SHA-1: 5788f0152bd2e12acce5d3bd14cab2d2f1052032 SHA-256: 8c5699ed2b6687d3a33fbd6c3e64d879907a6767ca992014fb7c8ab3e5e75e80
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=system+mechanic+16'. This URL is likely used to redirect users to a malicious download site. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, suggests a link farm intended to improve SEO for malicious content. The ML classifier also strongly indicated maliciousness.

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/pify?keyword=system+mechanic+16 In PDF document text
    • http://files.dancevibessf.com/uploads/1/3/1/4/131483009/vezajixuwiroti.pdfIn PDF document text
    • http://gagavifek.thelatestmews.com/uploads/1/3/0/7/130775403/sokax_juzekogut_wolobowazu.pdfIn PDF document text
    • http://wafotu.simplycheesecakesandmore.com/uploads/1/3/2/3/132303079/2244259.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/1/0428/1604/5222/files/ppt_template_magazine_cover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2828/3291/files/batman_arkham_asylum_bane_transformation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/49047816516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/3443/4725/files/befogiduxazagafoponi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/samazidezowumurakez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/24505846960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/70595060598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/kiwenelasefakisisew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1460/files/gokepizelezabig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6653/9673/files/novel_bandung_lautan_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2046/files/days_of_the_week_worksheets_spanish.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_off000077af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AF 5324 bytes
SHA-256: 9115be0ea8f08c8f150089fd676e46b42964c28531e99cbaea885c6fd0b0e833
font_01_sfnt_off000089af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89AF 10284 bytes
SHA-256: 15738aa1316977387f82e2380ff8e40603c20e7ee36e73e3ba9725c20638d2a0

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