Malicious PDF — malware analysis report

Static analysis result for SHA-256 a11cee15997977da…

MALICIOUS

PDF

52.0 KB Created: 2020-10-06 09:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 7e0e6afead567edc6f4c560981830275 SHA-1: 74a296b1f37625caa98ae6e3200d9bcde0468873 SHA-256: a11cee15997977daa6fcdd1df9e85cd21011505f96c9f6421ce4b1da4bfc7de6
184 Risk Score

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://cctraff.ru/strik?keyword=pygmalion+in+the+classroom+pdf In PDF document text
    • https://site-1042271.mozfiles.com/files/1042271/sumalide.pdfIn PDF document text
    • https://site-1036656.mozfiles.com/files/1036656/zozagufaxipezaxot.pdfIn PDF document text
    • https://site-1039833.mozfiles.com/files/1039833/34586184391.pdfIn PDF document text
    • https://site-1039391.mozfiles.com/files/1039391/40669464228.pdfIn PDF document text
    • https://site-1039583.mozfiles.com/files/1039583/zukofilujemakinupoxux.pdfIn PDF document text
    • http://rubilo.agbio-inc.com/uploads/1/3/2/6/132683130/316ed0b4faced.pdfIn PDF document text
    • http://files.flabbuless.com/uploads/1/3/1/8/131871416/3827816.pdfIn PDF document text
    • http://files.ibbeautiful.org/uploads/1/3/0/7/130775784/a1ddc121b7.pdfIn PDF document text
    • http://bopax.gainstorming.com/uploads/1/3/0/9/130969432/1526518.pdfIn PDF document text
    • http://files.3retrievers.com/uploads/1/3/1/4/131407511/a0c16.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/223cd506-c18e-46fb-a624-e8c6758e664d/60458122895.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d13b53-978c-4708-baf6-cdcffb71482d/lavusabunimuxuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/629c77d1-2946-4e68-8e9b-4c33ee7303c3/41083838931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2052793-aced-4f9d-a688-65085746e43f/rufulezonerip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58fc4eee-383e-4bb6-b1d9-0c856f8c7bae/80654290160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0383/8615/files/more_mole_calculations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2694/7989/files/gunovuxanifelejebad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9468/7400/files/jigubijamopimusajor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5508/files/dufejoluxume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3477/4174/files/pedro_menendez_de_aviles_florida.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_off000088ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AD 5672 bytes
SHA-256: 7aaf01eb2f231f163d4abb3de45a8eab358c803f130770cc88aca132b86db241
font_01_sfnt_off00009bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD4 12152 bytes
SHA-256: 55b6d21a7bf115c164f6d5110551210104fb608bb96f0b4b369f0547d73b680c

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