Malicious PDF — malware analysis report

Static analysis result for SHA-256 dddaef4cf3e032b2…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 08:25:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bdf69a6b1d9ed0e969ef2649bee5f2a SHA-1: 13655f64fe0558c550ce3ea150e547fdd8ae6f62 SHA-256: dddaef4cf3e032b2dd81a4793b27e50651edd7bd1a63ffc4a980035b70497c76
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains text related to a 'Brother printer driver' and a URL that appears to be a lure. This URL, https://ttraff.com/pify?keyword=brother+printer+driver+dcp+l2541dw, redirects to a Shopify-hosted PDF, suggesting a link farm or redirection chain designed to obscure the ultimate malicious destination. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=brother+printer+driver+dcp+l2541dw In PDF document text
    • http://files.thebeautyspotairdrie.com/uploads/1/3/1/4/131452741/8369821.pdfIn PDF document text
    • http://files.ducilloconstruction.com/uploads/1/3/2/6/132683135/2fc59f.pdfIn PDF document text
    • http://files.mendenhall-lab.org/uploads/1/3/2/7/132741052/xorosopabezad-dixigaseme-bomal.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/1/0434/6786/6265/files/81532694028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/artificial_intelligence_report_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9120/files/bunukojevas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5349/5958/files/puwawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6086/9785/files/92458616807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/angina_estable_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/16836098541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2660/4447/files/nogujaxikanukan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/44367490701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/zekowesejegebosapujuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2885/6477/files/vukuxan.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 5

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_off00005bff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BFF 5372 bytes
SHA-256: b2110001abdd346978a4ac3939084ec857583b491787e071a661865b9b891b1d
font_01_sfnt_off00006e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E6E 11112 bytes
SHA-256: fdd5a7bc403e13e63628919ea72b1dde2e34c1ed78d1117383be65050822ce8f

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