Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeeb5afb5235dfa4…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 02:18:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: db60b427cf40c5f7aa28b39b66dcea1e SHA-1: dc10f273193e96cccc5c167bfccf3073df9c35c9 SHA-256: eeeb5afb5235dfa4b02c6ed7e6e67350b334869587aaafc51d8e7d6a977e2b04
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains heuristics indicating it is a malicious redirector and uses a fake invoice/payment lure. The document body, though heavily obfuscated, contains text related to a 'Birmingham city council tax reduction form' and includes the malicious redirector URL. This suggests the document is designed to trick users into clicking the link, which leads to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=birmingham+city+council+tax+reduction+form In PDF document text
    • http://files.aplincookgardner.net/uploads/1/3/0/9/130969608/9ac8faf519b0.pdfIn PDF document text
    • http://gusoluka.disneylandiscreativity.com/uploads/1/3/2/6/132680813/rifodij.pdfIn PDF document text
    • http://files.taiwan-yuchia.com/uploads/1/3/1/6/131606491/067e287cf79a759.pdfIn PDF document text
    • http://files.alphaesqcleveland.com/uploads/1/3/1/8/131856713/gaxujifewa_vudipi.pdfIn PDF document text
    • http://files.perfectpolishedmarketing.com/uploads/1/3/1/3/131384559/8076dc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4645/2899/files/hebrew_alphabet_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3383/7224/files/67974502547.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/18066367457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/91331978285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9499/files/how_to_write_a_dedication.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8955/1770/files/retoguwad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0806/1604/files/ars_poetica_miosz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/33853361040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/molixalejamidomukupin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/52480634913.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDE 5476 bytes
SHA-256: 741feb200f58abc30a1769f64f0db71a7f8a7d0f72fcb81b42d9c756b97aaa0c
font_01_sfnt_off00006e44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E44 6080 bytes
SHA-256: c058119af7f467be315fbe2fd43ab3091ea0c4d5e19448511d232e2c72ebdc88
font_02_sfnt_off00007df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF1 10356 bytes
SHA-256: 9b945c23ca8c09f93ea73853389af48416817a15de425cc98cdf5b9a00b40bb0