Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d8a082bb6e7cc11…

MALICIOUS

PDF

43.1 KB Created: 2020-10-25 18:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 11e114ec2e499de9be4a147ce714667c SHA-1: e30d9c1805c23a313f9ec05a2882727db3bc0803 SHA-256: 3d8a082bb6e7cc113574d94c2c30d00479f0a933b91c1284405254696ceb8394
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a malicious redirector link that points to 'https://ggtraff.ru/123?keyword=download+wo+webcam+for+android'. The document body, though heavily obfuscated, contains this URL, suggesting an attempt to trick users into downloading potentially harmful software. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO manipulation and traffic redirection.

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://ggtraff.ru/123?keyword=download+wo+webcam+for+android In PDF document text
    • https://femitinekabel.weebly.com/uploads/1/3/1/4/131437683/2edb5eb53c6.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/monirafulowafix.pdfIn PDF document text
    • https://bavejojonosepes.weebly.com/uploads/1/3/1/3/131380601/jejezutesuvi-tulevipisa-wukotomudali-dufadenel.pdfIn PDF document text
    • https://pejopazuzaguwoz.weebly.com/uploads/1/3/2/8/132815183/ada42ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374984/normal_5f931f2b66d85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374851/normal_5f955e2a4b89f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368506/normal_5f8d30a39f87d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f943647bd29e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375087/normal_5f90fa3346edc.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/1/0492/6108/4828/files/ph_calculations_worksheet_table.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/psychology_a_concise_introduction_5th_edition_download_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/0623/2229/files/vusubola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3062/3894/files/puma_blockbuster_watch_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/500ca3a0-6d86-4725-a64c-f25b0e5cea40/41806523177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00a3d8d2-0255-4ba2-be49-4b3f6d36ffab/nukoroxaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b26d54d-3fbf-4bda-a241-bfed6f70f363/92570200427.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85410674-67ec-417f-9791-a213195fab9f/52772527785.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/220c494c-3970-4b3e-b4b3-1b2bb128df0d/18727186143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6268/9946/files/desktop_visualizer_apk_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7262/5058/files/19506538185.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6782 5220 bytes
SHA-256: 226f8f757702c7ed8ac413057eba09d8ac4b910913c03513ad22a5ac49643c85
font_01_sfnt_off0000793c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793C 11244 bytes
SHA-256: debe1a439e1b95360275289ab9d88abe77d7bb9a0512d97364be64ef09a01929

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