Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4b875911197ba5d…

MALICIOUS

PDF

41.9 KB Created: 2020-08-23 08:21:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e49273d72b073b86011404733021c487 SHA-1: 0545a9227e67f095d360d32a0c217cbadef82fc1 SHA-256: d4b875911197ba5de9f492d7aabb57e033bca55c9c27b7dd692a829ef071dacc
202 Risk Score

Malware Insights

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

The PDF contains a call-to-action button and embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Age of Empires 2 Google Drive' and the malicious URL, suggesting a lure to download or access a file. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the redirection to malicious infrastructure.

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.cc/pify?keyword=age+of+empires+2++google+drive In PDF document text
    • http://rofudojiz.bardgames.org/uploads/1/3/0/7/130775735/5101948.pdfIn PDF document text
    • http://roxipa.hummingbirdwordco.ca/uploads/1/3/2/7/132741555/c4addb42ba.pdfIn PDF document text
    • http://files.whisperofspirit.com/uploads/1/3/1/4/131453555/wovaluwelidovit-fopajelomal.pdfIn PDF document text
    • http://bapip.theformingspirit.org/uploads/1/3/1/6/131606755/2729200.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/1/0430/4837/0333/files/xawole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2978/1918/files/nogumopolafetopaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6712/9504/files/3516714556.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0553/2569/files/11056596717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1419/3311/files/cartoon_print_cotton_double_bed_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3524/5214/files/puzimizukipevonopufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90296180399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6052/7265/files/armored_core_last_raven_psp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/kakajokisubogag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/pazikakemiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9963/4330/files/rasorumaved.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_off000063e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E1 5332 bytes
SHA-256: dcc64e278404dc76bad551446374a4d6838f299428172f2dfad23891e445e142
font_01_sfnt_off00007601.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7601 10644 bytes
SHA-256: 6d8bc2aebba74a2c67746cd8359ecc29f4d61e65029a892305312e5172af4386

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