Malicious PDF — malware analysis report

Static analysis result for SHA-256 a343ed14119e4af2…

MALICIOUS

PDF

42.6 KB Created: 2020-09-25 01:35:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: dd57f866b0852e10cb30327c7affca08 SHA-1: e15a21f8d13c6d4eda345fbe5a25412b07de5090 SHA-256: a343ed14119e4af21b854e7951f321189d654755d41a304c17588e158df99bb6
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.cc/pify?keyword=bob+ross+master+paint+set+amazon In PDF document text
    • http://tutikit.aschnell001.com/uploads/1/3/1/4/131408899/ebd2f19.pdfIn PDF document text
    • http://zebumuxa.manfromcoxsriver.com/uploads/1/3/1/4/131438759/cb6000130f.pdfIn PDF document text
    • http://bonefu.barbarafoxart.com/uploads/1/3/0/7/130740433/1d1da5da.pdfIn PDF document text
    • http://nibizu.arcpairpress.com/uploads/1/3/2/3/132302998/6759829.pdfIn PDF document text
    • http://jifapere.pinkdreamsinc.com/uploads/1/3/0/8/130814085/6bb12181.pdfIn PDF document text
    • http://files.portagepartnersconsulting.com/uploads/1/3/1/4/131453329/zabonibipunage_kozis_sevamimelafu.pdfIn PDF document text
    • http://gamudi.demigodlodge.org/uploads/1/3/1/8/131856956/8ee65124cce.pdfIn PDF document text
    • http://files.limerickyogaroom.com/uploads/1/3/1/4/131408664/zitilaxorozob-zunogelukobogo-fipatobele.pdfIn PDF document text
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdfIn PDF document text
    • http://regife.80b480.com/uploads/1/3/0/8/130874472/tanapiles-somodez-vidazorelede.pdfIn PDF document text
    • http://nexux.mx.catalinapacificunderground.com/uploads/1/3/1/4/131453574/wofasidabo_pajorab.pdfIn PDF document text
    • http://beborodet.aoerecording.com/uploads/1/3/2/6/132695517/legimevo.pdfIn PDF document text
    • http://files.chesterflatearthgroup.com/uploads/1/3/1/3/131398250/ad3230cde6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/86089330822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3248/6823/files/force_and_destiny_character_sheet.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000689f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x689F 5172 bytes
SHA-256: bb704034be4eb1de8ad173056cb1dd7a4e5b5c4dcfddd0c052c1bd1975277724
font_01_sfnt_off00007a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1E 10292 bytes
SHA-256: dd8535c53d71bba848d15b7813f62e0923dcb3f851940115955c29ed3493d639