Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a5e274a9c4d3ad7…

MALICIOUS

PDF

53.4 KB Created: 2020-08-15 02:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93be4a9921de825cc1d21deff1ba744a SHA-1: 002a999c1eca025f3de5dcf1382832ae40afaeb0 SHA-256: 9a5e274a9c4d3ad7439764dc6d6bf04282cfdc8329f8c35948fdf3c9213e17cc
202 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating an attempt to lead the user to harmful content. The document body, though partially corrupted, suggests a lure related to 'New headway upper intermediate 4th edition tests pdf', combined with a call-to-action button and a link to a redirector. This pattern is consistent with advance-fee scams or phishing attempts.

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/wb?keyword=new%20headway%20upper%20intermediate%204th%20edition%20tests%20pdf In PDF document text
    • http://files.cbcorlando.com/uploads/1/3/1/4/131407164/dba28d114f83af.pdfIn PDF document text
    • http://gijelome.findhigherpurpose.com/uploads/1/3/1/4/131453501/5effd01d8d.pdfIn PDF document text
    • http://kufitugan.fuego979.com/uploads/1/3/1/6/131637036/2990339.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/1/0438/2975/6066/files/92687104833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8659/3694/files/garorozewegox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2400/6823/files/90919112370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8422/6453/files/lakomenivezuposomolaxad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9146/files/lufuzubizobudajujurigimis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/rejamukuwopironelozerefoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/gexavenebegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9141/7505/files/51869452033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9751/files/intellij_push_to_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/57895402296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4557/7116/files/27753847693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/tilamojexovenev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/tasobevudosiroperedifiku.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 1

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_off000091ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91EC 5500 bytes
SHA-256: 20cb469a882cb900ea73885811203ec9b793a5260db89f6151ebe826040b4365
font_01_sfnt_off0000a491.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA491 10380 bytes
SHA-256: 021da80f321661148be61d5f33b61935aa7defd4da7159b67be4f6c1f9d471b4

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