Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9e4e574f6f69440…

MALICIOUS

PDF

47.0 KB Created: 2020-08-11 23:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 438bc147508fb0bfdb966ba75b223a2b SHA-1: e62017994ad7195424e95966dcd714cf94a27b92 SHA-256: b9e4e574f6f69440cd76374a22124c545f6504b8afb1e9e9f8f02e755328369f
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=lateral+thinking+exercises+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URLs, reinforcing the lure. The primary intent appears to be redirecting users to malicious infrastructure.

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=lateral+thinking+exercises+pdf In PDF document text
    • http://files.mindbody-solutions.net/uploads/1/3/1/4/131406663/ecf97582b7.pdfIn PDF document text
    • http://files.michaelmoorestudios.com/uploads/1/3/2/6/132680908/xekulanokupesigit.pdfIn PDF document text
    • http://files.junewebsterart.com/uploads/1/3/1/0/131070313/joluberibijum.pdfIn PDF document text
    • http://files.cyndelladdison.com/uploads/1/3/0/7/130775310/musiwurola_nutugitit.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/1/0438/6911/0432/files/agreeing_and_disagreeing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0601/7186/files/kapawejekilewineze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/zadomot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/47008108385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/56522890847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/54770434377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/zevezepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5689/3847/files/monthly_budget_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/zeleginixubowabogevukuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5583/2471/files/50886480874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4118/4165/files/twitter_archive_viewer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9647/3749/files/the_devil_in_i_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/lazewigaso.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70F0 5492 bytes
SHA-256: 0b61978bfd4ae9d631c37a10d33551379b3104df9a7c483e8acfc8cc4b2e0cc5
font_01_sfnt_off0000838f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x838F 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00008c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1D 10044 bytes
SHA-256: e90c24e7bde63632bf81dfca6d65597a085b71d2bbc8b3991fcd500e16cf0c10