Malicious PDF — malware analysis report

Static analysis result for SHA-256 de886046d92f1cbf…

MALICIOUS

PDF

130.5 KB Created: 2020-10-27 04:48:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ddcbd782aa2c12699b3beeb9d9ea5d3d SHA-1: db14b7f81520e36fb71b869bae17bdc4f98cb986 SHA-256: de886046d92f1cbf0a45b4f510cbdeeb81652f22e8cb5ec800447b1ac9432e63
154 Risk Score

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/strik?keyword=knife+points+on+the+treasure+map+week+6 In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/fibaxizimudez.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/5088566.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/3722212.pdfIn PDF document text
    • https://gutugifowofe.weebly.com/uploads/1/3/1/6/131606479/luwojaduzuvuduzur.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/bezodagupu_nomamepo_kagexagojo_bikafusixer.pdfIn PDF document text
    • https://setumimirakav.weebly.com/uploads/1/3/2/6/132681532/jogofuru.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/tuxovi-diluvapurenotos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/toyota_supply_chain_case_study.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/medieval_period_of_english_literature.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/alignment_test_on_lathe.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/51976818465.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/41521404380.pdfIn PDF document text
    • https://s3.amazonaws.com/tapexiw/importance_of_budgetary_control.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/vefasokevokososefi.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/neoplasia_endocrina_multiple_tipo_1_y_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9271/2349/files/dolby_audio_edition_serial_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3560/2339/files/product_lifecycle_management_vtu_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/7788/9948/files/63997660760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9492/5219/files/83984644435.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_off0001aaa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AAA9 5388 bytes
SHA-256: 6a95b4195b51223b1c4919f477c6214530b9db2f0b1dc2f4a1867485b7a1cee5
font_01_sfnt_off0001bcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BCDD 11976 bytes
SHA-256: abe8364eb87cbe3dbd5db0269ed6fbd4e8b7016d6d3f163911763a893ea4cbe3
font_02_sfnt_off0001e4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E4AD 16120 bytes
SHA-256: e245d83aa9810ba0fce5f2bb0e5f561f89fd5e90631648584630540fd40b3bbf

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