Malicious PDF — malware analysis report

Static analysis result for SHA-256 47b0c4fd93d01dc1…

MALICIOUS

PDF

43.0 KB Created: 2020-07-25 23:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65e9826408a7f997879dc90ee79a5275 SHA-1: f31387f61adbdabb3b87111b75b3a7ba1b24d972 SHA-256: 47b0c4fd93d01dc109a5f751d1e14e9755730832b94016915cb4dd9f1d344dc3
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, appears to contain keywords related to educational worksheets, likely a lure. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content.

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=estimating+sums+and+differences+worksheets+grade+4 In PDF document text
    • http://files.constitutionalcritique.com/uploads/1/3/2/6/132696483/murulu_xunetiludovi_bukawifakik.pdfIn PDF document text
    • http://files.just-us-justice.com/uploads/1/3/0/7/130739498/458474.pdfIn PDF document text
    • http://files.ccamchurch.org/uploads/1/3/1/4/131410479/tilisedeben.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/1/0429/8581/6218/files/wuzekepogekomofagotala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/tiradafofuwerupefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4699/3052/files/vobosadoxuwaxitub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2417/7576/files/kofuretuzunivemalibelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9554/6273/files/93530408108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/56474286275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5961/7690/files/60107839679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/jiselu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0775/2861/files/55523636811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.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 3

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_off00006a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A20 5484 bytes
SHA-256: 6c590e1455eb9ad9ddbe5d5758925e24a807f8ac5636b139551038525687e9fd
font_01_sfnt_off00007cad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAD 9724 bytes
SHA-256: 95d1e55b220510c1a2f0bea5e6604b57b7d6080cae93a19288ae34829a8968e8

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