Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae40aeef95755c3b…

MALICIOUS

PDF

32.6 KB Created: 2020-10-29 22:31:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f7f10e7d871f78da41765437e4a16af1 SHA-1: 16c3e12c80747fe0aed145ed73bae4dbab499d54 SHA-256: ae40aeef95755c3b60f82eb0a8a412e61df0e20c6e29143d9687584176d6f0fa
154 Risk Score

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=pink+laptop+bag+nz In PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/ralomudep.pdfIn PDF document text
    • https://gixapogaruxa.weebly.com/uploads/1/3/4/3/134331356/xifutonume.pdfIn PDF document text
    • https://vezexozozufizus.weebly.com/uploads/1/3/4/3/134372857/zotaju.pdfIn PDF document text
    • https://xamegazu.weebly.com/uploads/1/3/4/4/134440804/808840672a04.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/1/0501/1239/7507/files/15146109873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8967/3883/files/more_grammar_games_mario_rinvolucri.pdfIn PDF document text
    • https://s3.amazonaws.com/dirijazi/what_is_a_glass_kiln_used_for.pdfIn PDF document text
    • https://s3.amazonaws.com/purufiz/2467335434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3739/1558/files/stick_war_legacy_2_mod_apk_android1.com.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5838/8888/files/free_pandora_premium_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7511/1586/files/vwr_1415m_vacuum_oven_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/70863609915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7377/2951/files/mega_man_zero_2_cheats.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_off00004543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4543 4968 bytes
SHA-256: d4ed995d07203c35220e41d6e95a6e882c8bb6cb7777e64872968708fedd3e4c
font_01_sfnt_off00005649.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5649 9472 bytes
SHA-256: db40ffb833337c400afcf9392b1680d37d7e6c6e8343d4844f693461033cfba1

Open this report in the interactive analyzer, or submit your own file for analysis.