Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb99cfc970789bd9…

MALICIOUS

PDF

49.2 KB Created: 2020-11-07 08:04:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 8d07e4ec5e5c02644882b19728407ae3 SHA-1: 4ae48b4dccbaf0aab609e7d7797fc3b044a13338 SHA-256: bb99cfc970789bd942ff9241897e232adcbcfa06d9123f1e10f39abe03ea5ea7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/aws?keyword=kinemaster+apk+download+mod PDF link annotation
    • https://kodupupagunoj.weebly.com/uploads/1/3/4/3/134314474/foged-mogurimijazezof-xupixoxib-tekedo.pdfIn PDF document text
    • https://tuxitusonodedin.weebly.com/uploads/1/3/0/8/130873989/8558987.pdfIn PDF document text
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/zakeme.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/xamilisi-jukadimovoz.pdfIn PDF document text
    • https://lagukekejase.weebly.com/uploads/1/3/0/8/130815031/8661075.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/zuxadol/12996407982.pdfIn PDF document text
    • https://vipuvixo.files.wordpress.com/2020/11/calligraphy_handwriting_worksheets.pdfIn PDF document text
    • https://nodumizid.files.wordpress.com/2020/11/drogas_naturales_semisinteticas_y_sinteticas.pdfIn PDF document text
    • https://bixirofu.files.wordpress.com/2020/11/82099482363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc810116-d83a-485d-854a-2b59a20a1165/bachman_and_associates_winnipeg.pdfIn PDF document text
    • https://dilopipo.files.wordpress.com/2020/11/demetivudaxakoleze.pdfIn PDF document text
    • https://gibalon.files.wordpress.com/2020/11/lofejifif.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/wow_classic_first_aid_225_to_300.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_off000068cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68CF 5228 bytes
SHA-256: 39bb2bb23dc867dfa14d6d036c57a91f757e4c0586b02d81e78924fb65c079c7
font_01_sfnt_off00007a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8E 11928 bytes
SHA-256: 80c59c1ad2ec192d57598b088c8da7f68aa8ba2288363e5f9e19e6daf812ba50
font_02_sfnt_off0000a2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C1 16076 bytes
SHA-256: 12198ed304d8e74df64bcaa8a4aae6da6436d73ceeb6d758e01031f89a18fcfe

Open this report in the interactive analyzer, or submit your own file for analysis.