Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6bbbb8ead0821f2…

MALICIOUS

PDF

53.8 KB Created: 2020-10-20 16:09:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: bee1d267cac0177a3eb40e4a55bd0b4c SHA-1: 7373425a9640c25dfd0ad6f45a9aa80cbe442c3d SHA-256: d6bbbb8ead0821f264a41f2b82b2b16ab0aa4be7b8f630733aa8d5159eedd721
184 Risk Score

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ttraff.me/123?keyword=goat+simulator+apk%252Bdata+android In PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/rebodi.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/704b47e98.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/tisug.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/5f39f3ae1e6.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/zuvekazabuz-topofelo-gupolekodojavo-ponabiloxe.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/6467466.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/laguleb.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/8279107.pdfIn PDF document text
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/9bc1f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/eae9e9ad-e4c2-4151-aa99-c2d2e114ea25/buzomafikuzunupuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a021440-f8a6-4f63-9008-ce23e41b2f1e/xipupobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09e1969f-f19b-44f2-a492-802f15610123/durisexoresumanug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bede1706-a26f-4cd9-ae6c-e386f2d34d6c/jajikoxosijosubixukediti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8a0046f-062b-40e7-b6e8-319032d48561/zaxizigerotodedagotod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b27ab127-766e-4898-ae5e-b336d33030d3/14405057645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/100a933c-958e-47c8-adb5-fffc7e02497a/kevipez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56c786a-4ba5-426e-9073-7cfd8bab3cc9/35068983634.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c01bbb2e-8087-4645-bf44-c9fb6df9af39/salusum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ef51de0-ee2a-46ce-9ac2-e02ae749f2a2/28674686410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17553d65-f361-4a3a-8459-82650e4c4645/nijasiduliguvivibotil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35ba1ba9-e648-4dd7-bf7c-706679cf7783/fegenanufasugenux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37958056-12d2-413d-8535-fc474ffd4d17/motu_patlu_kungfu_king_3.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A90 5200 bytes
SHA-256: 4382b8b9aee43f5fd4c1aadac1d9cd930e164cb2a65f39b2ff00b7ffea58dfcb
font_01_sfnt_off00008c2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2C 10596 bytes
SHA-256: 6ad12ac34be05aa04deb464f9dd00bb5862d7820e63acdd65c0e78ae43e910fe
font_02_sfnt_off0000b052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB052 17072 bytes
SHA-256: df195f37a9bb8ad83f6367f4d1c78e3c060a4773b0d0da5048b4546f232dacd5