Malicious PDF — malware analysis report

Static analysis result for SHA-256 a344e1af1c050029…

MALICIOUS

PDF

55.9 KB Created: 2020-11-01 06:42:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 47b610acc6516382059a3ad7b587abbe SHA-1: d8b6c53636260945953ca890c391c64290c0445a SHA-256: a344e1af1c050029dbf1957a02c5891267e50352459c095be4e76f22ab972fb5
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://cctraff.ru/123?keyword=best+fortress+heroes+idle+heroes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374376/normal_5f9dc3a56e555.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/pamerov_suzumebisemuze_pufejowowugi.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/putivexo.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/jadere/atomic_structure_class_11_notes_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/effective_academic_writing_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/813a14e0-f25c-45bb-8273-949590853139/jifuwibunapojewifufelar.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/23505992032.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/32688140022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f09657f9-1f32-4bc3-97ae-dfaf50a6356f/semi_log_graph_paper_for_sieve_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/arihant_all_in_one_science_class_10_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d89ca34-9743-404f-8434-65f08a72ba49/70737762015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dcf6888-0836-4dce-8217-5a0b4e47f227/32342688203.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/l_avantage_concurrentiel_michael_porter_gratuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7448d540-8ab9-413b-8092-8c0a0c0d5aec/toastmaster_coffee_maker_keeps_shutting_off.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/junoposo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e6047f-b0ac-48e2-994c-7e3aae9e1e3b/23785132518.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6fcbdb1-a8e1-40e4-82a8-4a0fc31f5e6c/zaxer.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_off0000892f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892F 4836 bytes
SHA-256: 29155f11fb88d190a96bd7d1ba4e039e3e50d636cdc75df0b82f37a1582f1b80
font_01_sfnt_off0000999c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999C 10516 bytes
SHA-256: 7359891b6f0da2b9ad1f39cad064851f98a89f8cc2cfe2e81d64ab58f9a1d1d4
font_02_sfnt_off0000bd1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD1C 16192 bytes
SHA-256: b80dcff4b26782ff2bd1ed82e01ce9053ba91b1a5afb9bea673378648d26bec5

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