Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5045eb0e6a6baeb…

MALICIOUS

PDF

47.4 KB Created: 2020-10-07 00:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cee78e6dbf219154e1fb16384036cd1a SHA-1: 7030d8e01cc7ec29070b299e8d67d5fd9be6838e SHA-256: f5045eb0e6a6baebe3b0f20fb02ebb17e44f0f0c4c9c0a4ffbe83637de4f1f5e
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://cctraff.ru/pify?keyword=consumer+behavior+solomon+12th+edition+pdf In PDF document text
    • https://site-1037003.mozfiles.com/files/1037003/lovufo.pdfIn PDF document text
    • https://site-1041505.mozfiles.com/files/1041505/xelosunidukozij.pdfIn PDF document text
    • https://site-1037238.mozfiles.com/files/1037238/24070556602.pdfIn PDF document text
    • http://files.kendrickdevelopment.com/uploads/1/3/1/4/131453182/vizus.pdfIn PDF document text
    • http://files.hepatitiscmsg.org/uploads/1/3/2/6/132695294/5d86818896bf.pdfIn PDF document text
    • http://files.lawsmosis.com/uploads/1/3/0/9/130969080/e81b05f3a16.pdfIn PDF document text
    • http://bavebup.lakecountyiltransition.com/uploads/1/3/1/4/131438539/9653562.pdfIn PDF document text
    • http://pofumive.pinchpennythreads.com/uploads/1/3/1/4/131453453/pibepixagalida-godon-kiginof-kenidelavibige.pdfIn PDF document text
    • https://site-1042919.mozfiles.com/files/1042919/ladukagosujako.pdfIn PDF document text
    • https://site-1037010.mozfiles.com/files/1037010/jiposanuvif.pdfIn PDF document text
    • https://site-1038857.mozfiles.com/files/1038857/sagenesanorivig.pdfIn PDF document text
    • https://site-1036833.mozfiles.com/files/1036833/14962550030.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/1/0464/6597/4440/files/free_evinrude_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7704/9247/files/89554818449.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/9356/4833/files/vonajotanukud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0913/9110/files/halloween_basketball_legends_unblocked_full_screen.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B35 5572 bytes
SHA-256: 38cc7db715c9a5362b3106469a8944ff41f8f710595de14bd46e65bc59f492a1
font_01_sfnt_off00007dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 10900 bytes
SHA-256: 61557b109461132ad038a60fc5dbbb24b94a75b1b673748b33b27d842bfcae34
font_02_sfnt_off0000a236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA236 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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