Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb7cba2a65c00ea…

MALICIOUS

PDF

71.6 KB Created: 2020-08-05 16:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8e3e415e60aeccb9b6ac4448f9b0d2bb SHA-1: c22937a8483049adbc8d7545990e16ea3f77e9e0 SHA-256: 2fb7cba2a65c00eab44b5f124dc50a7dd2f6ae022e4fc05479793f82186d0c6f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of a link farm suggests an attempt to manipulate search engine results to distribute 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=alexander+hamilton+federalist+papers+pdf In PDF document text
    • http://files.eosfp.com/uploads/1/3/2/6/132696018/2500595.pdfIn PDF document text
    • http://files.leatherlondonguide.com/uploads/1/3/1/8/131856234/1893753.pdfIn PDF document text
    • http://files.pegasusclinics.com/uploads/1/3/1/4/131438260/rufud.pdfIn PDF document text
    • http://nijuki.theadventuroussmith.com/uploads/1/3/0/7/130739204/4c39319dbf1.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/1/0430/4715/7911/files/gawesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/vovekemefivivinal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/19232916761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4169/2567/files/66579628733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/watisetik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/gururefixuzaxopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7742/6584/files/vodidifubojasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0843/4081/files/segukizufexiziludomimovos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3759/7607/files/kemeturajefetugebajubev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4410/8453/files/oxford_picture_dictionary_english_spanish_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6735/9900/files/75850498658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/sebumafofunar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/zelazukibabopenuzas.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 7

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_off0000dbb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB8 5340 bytes
SHA-256: 36e7410f8b8910890b821d8ee518ab9344f618b2b0f7bbd78afe4a2e90bb0a09
font_01_sfnt_off0000edbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBD 10260 bytes
SHA-256: 7964ff70ecb06ec5f7703e9a3987435bac65fc132d3d746ee43a10e743394c01

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