Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e68f72ddd53f12…

MALICIOUS

PDF

119.1 KB Created: 2020-10-25 15:15:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb7752c23a6f4fadea7c8a1cb3f777ff SHA-1: 26356a3698f94dc0f6130d9cdc3b65934b98b5a9 SHA-256: 08e68f72ddd53f12b283c57b304513574a4b307906be3119b4cf37c021085eb1
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/123?keyword=organic+solar+cell+working+principle+pdf In PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/wiwaboza_nezizujine_tugewokakobex_mewedezoxudero.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/2727007.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pusori/nujoxasofipujuvaviral.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/441723113.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/nojikuwojunemijifowonun.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/ich_analytical_method_validation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/4496/6047/files/ariens_mower_parts_australia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb10fdc-938d-4d51-9633-654141a0e949/fogipuvilupokebefilirora.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c48eb49-36cc-4183-9852-a311a321fc24/78044115227.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06252e27-3c52-4c76-9f5d-1df7f7b4579c/vakikumepisaret.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/9920/4000/files/90962761596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9168/0163/files/manualidades_con_palitos_de_helados_para_navidad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2663/5157/files/61684929943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1511/6696/files/46181539603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9558/9018/files/lego_wedo_2_building_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2000/4761/files/lumulatixena.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6010/0765/files/work_energy_calculations_answer_key.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17501 5504 bytes
SHA-256: 952f8c4cc68a51e6aae9c4d3aaafd78ada1a33d4d40bde647207446f140d8e5d
font_01_sfnt_off000187da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x187DA 16424 bytes
SHA-256: db1f88d541ca0b76b05a46e7d3475c3b423cc8aa4672514fa4e34e5e66b49ef3
font_02_sfnt_off0001b9b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9B3 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90

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