Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcfc9225089e350d…

MALICIOUS

PDF

43.6 KB Created: 2020-08-19 09:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf49dec65ebfe949d646210a3c80d6dc SHA-1: 752e2e145188787f77a78d8e004820c975678e12 SHA-256: fcfc9225089e350dba0f313a465e155f81532d37e9dfa3c1d79288aa9716d85c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'kindergarten math counting money worksheets' and a URL that appears to be a redirector. This suggests a phishing or scam attempt disguised as educational content. No scripts were extracted from this sample.

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=kindergarten+math+counting+money+worksheets In PDF document text
    • http://files.junedulshahid.com/uploads/1/3/1/3/131384070/zizejobod.pdfIn PDF document text
    • http://files.sunpawco.com/uploads/1/3/0/9/130969440/1998982.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/1/0435/2330/9727/files/mifulasexenuwitipadove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9430/2115/files/nizuzoretozejumetemifoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5522/6778/files/jesisejaporakosisisozegon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0569/6409/files/xapawagonerivisusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/ramuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/health_economics_bhattacharya_download.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 8

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_off00006715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6715 5548 bytes
SHA-256: a29e0b7eac3346507bd7fb3e43f0102d7cca2de52b329c77c4056742ac2d2de2
font_01_sfnt_off000079cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79CF 12488 bytes
SHA-256: cb3fc81ebf69a4bcd0bdcae11830543cb79983d02686b93727aa8217b6f62dfc

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