Malicious PDF — malware analysis report

Static analysis result for SHA-256 1296853eb064832d…

MALICIOUS

PDF

46.2 KB Created: 2020-10-31 09:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7bd06baa32d0cbe002179f055a226890 SHA-1: de195bcd830cc7091102b544e584752923e0c422 SHA-256: 1296853eb064832da32f20aa5e74ee2c3ed92f8a7a6be0770fa99cc36591a779
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://ggtraff.ru/123?keyword=connections+a+world+history+3rd+edition+pdf+free+download In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuxadol/radebanawinuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/trusting_god_day_by_day_365_daily_devotions_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5786/3592/files/ruralezitav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5394/6782/files/jatajixixe.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/material_notification_shade_apk_old_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4268/8154/files/12013054808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6574/4801/files/emotional_rescue_minnesota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2755/2661/files/download_top_eleven_mod_apk_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5430/0835/files/remote_access_android_phone_from_another_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/art_and_answerability_bakhtin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/1501/7898/files/exhaust_gas_recirculation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3173/5715/files/point_of_view_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2951/0324/files/angaraka_ashtothram_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3258/3578/files/wasutifokuregopakiledadol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0615/9779/files/convector_electrico_nex_manual.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_off000072fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72FE 5504 bytes
SHA-256: 0dbfbc281ea8af30d76dd6ad3c6e0eb126530eabf1deebcff0a03f6e87f10d3a
font_01_sfnt_off000085c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85C6 11076 bytes
SHA-256: ba7758ae52241e66a7d96373b0d4c60ac3a2fab8cae91ebf55a16bf52820cb09

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