Malicious PDF — malware analysis report

Static analysis result for SHA-256 5faf8b5da01fc9a1…

MALICIOUS

PDF

52.7 KB Created: 2020-10-26 12:05:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a6ce7ce5998b610662a4b5bc5208979b SHA-1: 10c0b8b80a91dbbd4c42fb95f73057c57efe6791 SHA-256: 5faf8b5da01fc9a1626f53e9514a7f33def63518a222684f3377a8ad91073b06
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://gettraff.ru/pify?keyword=ews+form+for+west+bengal+pdf In PDF document text
    • https://mevamakokuvafas.weebly.com/uploads/1/3/4/0/134040887/xenazelavij.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/3573319.pdfIn PDF document text
    • https://mikazeral.weebly.com/uploads/1/3/2/3/132303371/5050020.pdfIn PDF document text
    • https://rulomegujenuguv.weebly.com/uploads/1/3/4/3/134329868/lisetaramid.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/wovumogo.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/1/0483/8676/9053/files/ipl_2020_timetable_and_venue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/sdl_2_images_additional_dependencies.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4665/2062/files/pawomazekenixe.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/12158292292.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/caccia_al_tesoro_nell_universo.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/story_elements_worksheets_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/vinilepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c0d3f6e-4090-49af-a3c8-03ca056208b0/67447737929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde78482-b59b-4b20-b0d9-f40826799902/75876385858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f00eca1-207d-48a1-a4d8-146098d10ce3/87062677031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3459289e-f226-4e36-80e2-f6bbf8f80d54/veer_zaara_full_movie_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9462/9788/files/79046456028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4829/4807/files/80137409002.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/33257355470.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/tukasakepupapetujavig.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/pugivesebitojiletisat.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/sociolinguistics_by_hudson_free_download.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000694b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694B 5548 bytes
SHA-256: 0b25f69374f83fda1bc2d86559e6fcfc818ca7839155acc75de9716694f30007
font_01_sfnt_off00007c18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C18 12180 bytes
SHA-256: b24357fa93fa821d761abe1fb75e416a6ed161c2261a70518177b3a18b460878
font_02_sfnt_off0000a1b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1B1 10364 bytes
SHA-256: 68e48dde8ed14cb3bd45740ea82d61650faa18bc0e145bd5a3015aff5ca4de22

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