Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7dbe5d1fd37213d…

MALICIOUS

PDF

48.6 KB Created: 2020-10-26 17:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 6634099af15ae9f03c517ef46a7e7d46 SHA-1: 56209075af8d8ecc1d41c46d9d2135638bf3c604 SHA-256: f7dbe5d1fd37213d7f00a5c721fb4314a31ba3157324086757aed622a0d2b5f4
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=esther+leslie+liquid+crystals+pdf In PDF document text
    • https://bakuwosir.weebly.com/uploads/1/3/0/8/130874569/15d76.pdfIn PDF document text
    • https://kivofijola.weebly.com/uploads/1/3/4/3/134309380/tibatulelenok.pdfIn PDF document text
    • https://masogipu.weebly.com/uploads/1/3/1/6/131606875/dbd1d82febeea17.pdfIn PDF document text
    • https://gobumireg.weebly.com/uploads/1/3/1/3/131383916/vuzutukirekugog.pdfIn PDF document text
    • https://sakeneri.weebly.com/uploads/1/3/4/3/134339958/gusixuf.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/1012736.pdfIn PDF document text
    • https://mugekezozo.weebly.com/uploads/1/3/1/6/131636766/tukog.pdfIn PDF document text
    • https://derodaju.weebly.com/uploads/1/3/1/6/131606282/3774974.pdfIn PDF document text
    • https://badasemo.weebly.com/uploads/1/3/4/4/134482086/4875657.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
    • https://cdn.shopify.com/s/files/1/0482/3082/6141/files/plant_cell_organelle_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0061/7381/files/faringitis_aguda_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/2078/5068/files/tokujebatox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6937/9238/files/it_was_me_all_along_by_andie_mitchell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f61e0fe6-32b9-42b3-a722-8a99df5c8ddb/febawufewaxenezinan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11744792-5911-45a0-933e-9099dd891373/bernina_1020_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c1d08a7-5ae2-461f-8da4-817729696051/woxoretubejewilabumiz.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/6599646069.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/mini_budget_2018_19_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29632b42-e720-424c-958c-03a290885aee/limup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3f63204-6886-4b1a-99af-126de4fc2ff0/zufuzufuzujonabafuseb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca782fa1-6ac3-4b48-b26c-f69d4b1693ae/anaconda_2_telugu_dubbed_full_movie.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000596b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x596B 5096 bytes
SHA-256: fbbc15d3f0f18cbdcf40871b99023ea09988549e277a0e0bc8ec9251bae72a17
font_01_sfnt_off00006ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACE 9704 bytes
SHA-256: 24504fee9b14c7d50c6f26a7d1c00713edc0c018533278a7b7f4946decb2fb70
font_02_sfnt_off00008c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C35 17504 bytes
SHA-256: 3bf9ca4f3e0ec572129b58436136c6a8c95a1bb1a59bfa9557e984e96d1f5309
font_03_sfnt_off0000a66a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA66A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2