Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ee6796063d635e…

MALICIOUS

PDF

46.8 KB Created: 2020-11-01 16:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7c6cc7410b556fadd8cbb08edd535cc4 SHA-1: d83180d67a44d89ca2cb6d3a0b53276115481599 SHA-256: d5ee6796063d635ee95845168143c2795267165c00c8be283200860843c7ea98
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a social engineering lure, instructing the user to install a browser extension or update to view content. It embeds a link that redirects to malicious infrastructure, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The presence of multiple external PDF links also suggests a link farm, potentially for SEO manipulation or distributing further malicious content.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=iso+to+pbp+converter+online In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/7855/7095/files/the_authors_voice_play.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/9951/0678/files/cooking_diary_andere_restaurants_besuchen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb137d4c-0e0d-4c82-9432-87f73426e075/funug.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/xonuxajozes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2996b5e-b4c6-4024-ab5b-faee8a0f2bc5/dixit_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/72437724027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6642/2965/files/allegra_gotas_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0524/6112/files/energy_calculations_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/piping_system_fundamentals.pdfIn PDF document text
    • https://s3.amazonaws.com/vopadofugon/la_biblia_del_siglo_de_oro.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/caudal_regression_syndrome_how_do_they_poop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9366/2133/files/multiplying_and_dividing_scientific_notation_worksheet_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2045/0972/files/worksheet_for_class_9_cbse_maths_polynomials.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7482/5621/files/89583307802.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://www.gnu.org/licenses/gpl.htmlIn 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_off00005f5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5F 4852 bytes
SHA-256: c60616d7624f0c53eba7111875398bc5d37848e4eeff1df9b50b0d7de72a4e0f
font_01_sfnt_off00006feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 8368 bytes
SHA-256: 8854e82a0ca70c62322699cb742fb00f50b19ac7a342a32b7f836df34f33d53a
font_02_sfnt_off00008693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8693 11368 bytes
SHA-256: 9127461e6edc2ee706532c2eede667c9bfde52c463405e3a0e03740f3ad7c97e

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