Malicious PDF — malware analysis report

Static analysis result for SHA-256 ead6ef9d43e43310…

MALICIOUS

PDF

45.9 KB Created: 2020-07-30 18:44:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94b510bca60cb4cdc4550e42b7b724f6 SHA-1: a9633942f14ef75cbb5cdc3a9a753433eb7e5a8c SHA-256: ead6ef9d43e43310971cc354bedc57be6c159b29aa9a557bad0b486e0ddede8c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link and a link farm, indicating an attempt to drive traffic to external sites. The embedded URL and the document body text suggest a lure for downloading files, specifically mentioning 'calligraphy worksheets pdf free download'. The primary malicious IOC is the redirector URL, which likely leads 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=calligraphy+worksheets+pdf+free+download In PDF document text
    • http://files.loribeliharboyd.com/uploads/1/3/2/7/132712206/revafitawevatoj.pdfIn PDF document text
    • http://files.jpriceconsulting.com/uploads/1/3/1/3/131378780/0ca4749c86ad8.pdfIn PDF document text
    • http://files.rohetrackera.com/uploads/1/3/1/4/131455337/9821575.pdfIn PDF document text
    • http://files.podicongo.com/uploads/1/3/0/7/130775518/jewalafoki-wubijesajek-texofurojefaxed-susomesig.pdfIn PDF document text
    • http://files.newyorkstategrandcouncil.com/uploads/1/3/1/4/131437538/bapemo.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/1/0432/4396/2532/files/nefapom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0008/5149/files/25344032571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48465164240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3891/4213/files/93718934425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/24276551188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/xakofit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5830/6965/files/97145899238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1538/7811/files/32559164103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/70116363722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/68027117251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/zunefad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7325/files/74429008107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1817/3086/files/kufewovovopapuw.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_off00007681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7681 5372 bytes
SHA-256: 376aecfc38f4297d20bca2ed3f1dff7a7f8db4a7fa7b537d0612cbb73503901e
font_01_sfnt_off000088d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D7 9864 bytes
SHA-256: 1ae73ec9c6d54ff8b196938ccb58475cb49075195492b9645412cc267955c09c

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