Malicious PDF — malware analysis report

Static analysis result for SHA-256 760c9c86f68a31eb…

MALICIOUS

PDF

63.0 KB Created: 2020-10-20 13:09:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 49656c949f6501e186cbe75759aa5ff5 SHA-1: 9dfb187b9b183fdaa97904fc90c0dc68ddbf2515 SHA-256: 760c9c86f68a31ebd22122cf5459b7cbad3fcfe212f97f97d2a50cbe21d49e74
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation. One critical finding is a link to a known malicious redirector at https://ggtraff.ru/123?keyword=ts+panchayat+secretary+syllabus+2020+pdf, indicating a phishing or malware distribution attempt. No scripts were extracted, but the presence of numerous links and the malicious redirector strongly suggest an attempt to lead the user to malicious content.

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=ts+panchayat+secretary+syllabus+2020+pdf In PDF document text
    • https://pimetagedipimop.weebly.com/uploads/1/3/1/6/131636886/rasef.pdfIn PDF document text
    • https://leputixoted.weebly.com/uploads/1/3/2/6/132683438/wutakaminumu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f8d6584071f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5f8a909c86506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_5f8940c138cc0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8791ea-1da0-4699-81f4-4b83754071c4/65372304547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d71d3875-caaa-47cb-9e26-00c3c687717d/tasolugosedifiwirivilal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ea97b26-864a-483b-9c53-10bdf5d90909/nokujavemamiwezaxura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/011c9a73-cd52-4b76-8521-2b494c6cb6a5/download_pokemon_fire_red_rom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b58e45f8-11cb-42b7-834d-61bb61435479/jepakepinateko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf6c377-6165-411c-b985-600f9efe7daf/seratakonafaxeneruv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fb60675-4b3b-425a-b9b6-0ecde0c5d6f2/vw_polo_owners_manual_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8814/3038/files/adidas_busenitz_pro_shoes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/2188/4328/files/2005_ford_mustang_v6_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6424/8470/files/fijapot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/muji_aroma_diffuser_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/1155/3473/files/bezudokise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/1257/5391/files/46675212388.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 5432 bytes
SHA-256: cca59502b1f5b86c27d9d63ddf9680f14b9051a5ee7a2d5626fb0f2164dbb10a
font_01_sfnt_off00008ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC1 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off00009a23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A23 11320 bytes
SHA-256: 1cbd89b23b7bd0fe2e25bfd857dd677117d7bcfed755de9ec1dd7de6010bd683
font_03_sfnt_off0000bf02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF02 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71
font_04_sfnt_off0000cd04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD04 10184 bytes
SHA-256: d106805bdbb565ed9906f35a2a3674cfca29c539583ffb87413fbea3174ce5ae